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Python TypeError: list indices must be integers, not str
 
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Python TypeError: list indices must be integers, not str
Views: 12065 ATOM
How To Index and Slice List In Python 3
 
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Be sure to like, share and comment to show your support for our tutorials. ======================================= Channel - https://goo.gl/pnKLqE Playlist For This Tutorial - https://goo.gl/EyZFti Latest Video - https://goo.gl/atWRkF Facebook - https://www.facebook.com/mastercodeonline/ Twitter - https://twitter.com/mastercodeonlin?lang=en Website - http://mastercode.online ====================================== In this Python tutorial, we will explain how to use index and slicing assignment in Python list to change the objects in a Python list.
Views: 2646 Master Code Online
Python Tutorial: Slicing Lists and Strings
 
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In this video we will look at how to slice lists and strings in Python. Slicing allows us to extract certain elements from these lists and strings. This can be extremely useful for stripping out certain values from lists or getting a substring of a characters from a string. Let's take a look at a few code examples. The code from this video can be found at: https://github.com/CoreyMSchafer/code_snippets/tree/master/Slicing ✅ Support My Channel Through Patreon: https://www.patreon.com/coreyms ✅ Become a Channel Member: https://www.youtube.com/channel/UCCezIgC97PvUuR4_gbFUs5g/join ✅ One-Time Contribution Through PayPal: https://goo.gl/649HFY ✅ Cryptocurrency Donations: Bitcoin Wallet - 3MPH8oY2EAgbLVy7RBMinwcBntggi7qeG3 Ethereum Wallet - 0x151649418616068fB46C3598083817101d3bCD33 Litecoin Wallet - MPvEBY5fxGkmPQgocfJbxP6EmTo5UUXMot ✅ Corey's Public Amazon Wishlist http://a.co/inIyro1 ✅ Equipment I Use and Books I Recommend: https://www.amazon.com/shop/coreyschafer ▶️ You Can Find Me On: My Website - http://coreyms.com/ My Second Channel - https://www.youtube.com/c/coreymschafer Facebook - https://www.facebook.com/CoreyMSchafer Twitter - https://twitter.com/CoreyMSchafer Instagram - https://www.instagram.com/coreymschafer/ #Python
Views: 87364 Corey Schafer
Python Tutorial: How To Use The List Index Method in Python
 
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Python 3.7 Version - https://youtu.be/_zZcivsR3nQ In this Python tutorial, we look at how to find the index position of a object in a list using the list index method in Python.
Views: 4774 Master Code Online
Python TypeError: unsupported operand types for +: 'int' and 'str'
 
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Python TypeError: unsupported operand types for +: 'int' and 'str'
Views: 16172 ATOM
Important Data Types You Should Know | Python
 
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To learn coding quickly, complete courses on Codecademy: https://bit.ly/2M3t5Mr In this video I will provide you with a brief description on the various data types you should know. Data Type Descriptions: Integer: An integer data type is used to store a single whole number. This number can be positive or negative. They cannot have decimal places though. We can use maths on this data type such as adding two integers together. Float: A float data type is used to store a floating-point number. Floats are used instead of integers when more precision is required. We can use maths on float data types. We and we can also add an integer to a float. String: A string data type is used to store text and are identified with quotation marks. We cannot use maths functions on strings. Numbers can also be strings if we classify them between quotation marks. Boolean: A Boolean data type can only have two values; true or false. They are classified by the word true with a capital T and false with a capital F. Booleans are used when we compare two values. Such as if a==b. List: A list data type is used to store multiple values under a single variable. We create a list using square brackets. A list can store multiple instances of the same value. Both numbers and text values can be stored in the same list. List values can be added, deleted and modified after their creation in your program. Lists are ordered and the values can be referenced using an index number. Set: A set data type is like a list in the fact that it can store multiple values under a single variable. Sets are created using curly brackets. However sets are unordered and cannot contain duplicate values. We can add and remove items after our set has been created. We can find a value within our set using an if statement to check if the value exists. Both numbers and text values can be stored in a single set Tuple: A tuple is a data type used to store multiple values under a single variable. Tuples are created using Tuples normal brackets. They are ordered and cannot be modified after their creation. We can address a value within our tuple using an index number. Like in our list and set data types, tuples can contain both numbers and text values in a single tuple. Dictionary A dictionary stores multiple values of data and are created using curly brackets. Dictionaries are structured using keys which must be unique. Every key has a value and we use colon in between the key and the value to sperate them. We can address an element within our dictionary using the key name. Dictionaries can be modified after creation. Dictionary keys and values can be either numbers or text.
Views: 14 RAWR Coding
How To Repeat Objects In A Python 3 Tuple
 
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Be sure to like, share and comment to show your support for our tutorials. ======================================= Channel - https://goo.gl/pnKLqE Playlist For This Tutorial - https://goo.gl/EyZFti Latest Video - https://goo.gl/atWRkF Facebook - https://www.facebook.com/mastercodeonline/ Twitter - https://twitter.com/mastercodeonlin?lang=en Website - http://mastercode.online ====================================== Repeating data in a Python Tuple is pretty straight but there is some important information you must remember when working with immutable objects in Python. First off we are never changing the original tuple instead we are actually creating a new Python tuple. With that being said we are not saving our newly created tuple either so we have to assign a variable to represent the tuple. We repeat the data in a Python tuple by using the asterisks or the multiplication operator. This will allow us to repeat the data in the tuple. This is similar to how we repeated strings and list. If you have any questions about repeating data in a Tuple leave a comment below and we will help you out.
Views: 1118 Master Code Online
Creating and initialising a fixed size Python list
 
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In this tutorial I look at how to create and initialise a fixed size Python list. Whilst pointing out that you should not really regard a list as fixed in size (just because the arrays of other languages are fixed in size). A Python list is similar to arrays of other languages but they are not the same. For example a list can store mixed types in its elements and a list can grow and shrink its length as expressed by the number of its elements.
Views: 710 John Philip Jones
Python Tutorial : Data Structures (list, dict, tuples, sets, strings)
 
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In this video I am going to show How to use different Data Structures in Python 3. The builtins data structures are: lists, tuples, dictionaries, strings, sets and frozensets. Python Strings - 00:00:01 Python Lists - 00:12:33 Python Tuples - 00:22:32 Python Sets - 00:29:22 Python Dictionary - 00:42:58 Python Slice - 00:52:05 Data structures are particular ways of storing data to make some operation easier or more efficient. Lists: ---------------------- A List in Python is a kind of Collection that allows us to put many values in a single “variable”. A collection is nice because we can carry all many values around in one convenient package. So What is a List? List is An ordered set of values: Ordered: 1st, 2nd, 3rd, … Values: can be anything, integers, strings, other lists List values are called elements. A string is an ordered set of characters so it is “like” a list but not exactly the same thing. Tuples: ---------------------- Python Tuples are another kind of sequence that functions similar to a list - they have elements which are indexed starting at 0. But Tuples are "immutable" i.e. Unlike a list, once you create a tuple, you cannot alter its contents. So Tuple is an an immutable sequence which is Very similar to a list but Tuple is created it cannot be changed Format: tuple_name = (item1, item2) Tuples support operations as lists i.e.Subscript indexing for retrieving elements, Also Methods such as index, Built in functions such as len, min, max, Slicing expressions, The in, +, and * operators. Tuples do not support the methods like append, remove insert, reverse, sort. Advantages for using tuples over lists: 1)Processing tuples is faster than processing lists 2)Tuples are safe 3)Some operations in Python require use of tuples list(tuple_var) function: converts tuple to list tuple(list_var) function: converts list to tuple Python Sets: ---------------------- So What are Sets in python?Sets are An unordered collection with no duplicate elements. Sets are Identified by curly braces e.g. {'Max', 'Tom', 'Den'}. Python Sets Can only contain unique elements, Duplicates are eliminated automatically at the time of initialization. Sets have no order and also Sets do not support indexing. Sets in Python can also be be used to perform mathematical set operations like union, intersection, difference and symmetric difference. Python Dictionary: ---------------------- So What are Dictionaries in python? dictionary in python is an associative list or a map. We can think if dictionary as a list of pairs, where the first element of the pair, the key, is used to retrieve the second element, the value.Hence we map a key to a value.Dictionaries are Python’s most powerful data collection. Dictionaries allow us to do fast database-like operations in Python.Dictionaries are like Lists except that they use keys instead of Index to lookup values. Python Slice: ---------------------- So What is Python Slice? A slice is a span of items that are taken from a sequence List slicing format: list[start : end: step]. Span is a list containing copies of elements from start up to, but not including, end If start not specified, 0 is used for start index. If end not specified, len(list) is used for end index. Slicing expressions can include a step value and negative indexes relative to end of list. And What is Negative Indexing In Python: I a Python Collection such as Lists, Strings, Tuples, Bytes .. we can refer to an element by a negative index representing how far it is from the end. example # +---+---+---+---+---+---+ # | P | y | t | h | o | n | # +---+---+---+---+---+---+ # 0 1 2 3 4 5 ---- Positive Index # -6 -5 -4 -3 -2 -1 ---- Negative Index #PythonTutorialforBeginners #ProgrammingKnowledge #LearnPython #PythonCourse ----------------------Follow--------------------------------------------- My Website - http://www.codebind.com My Blog - https://goo.gl/Nd2pFn My Facebook Page - https://goo.gl/eLp2cQ Google+ - https://goo.gl/lvC5FX Twitter - https://twitter.com/ProgrammingKnow Pinterest - https://goo.gl/kCInUp Text Case Converter - https://goo.gl/pVpcwL ------------------Facebook Links ---------------------------------------- http://fb.me/ProgrammingKnowledgeLearning/ http://fb.me/AndroidTutorialsForBeginners http://fb.me/Programmingknowledge http://fb.me/CppProgrammingLanguage http://fb.me/JavaTutorialsAndCode http://fb.me/SQLiteTutorial http://fb.me/UbuntuLinuxTutorials http://fb.me/EasyOnlineConverter
Views: 5037 ProgrammingKnowledge
Python Tutorial for Beginners 13 - Python Lists
 
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In this video I am going to show What are Lists and How to use lists in python. A List in Python is a kind of Collection that allows us to put many values in a single “variable”. A collection is nice because we can carry all many values around in one convenient package. So What is a List? List is An ordered set of values: Ordered: 1st, 2nd, 3rd, … Values: can be anything, integers, strings, other lists List values are called elements. A string is an ordered set of characters so it is “like” a list but not exactly the same thing. The list of all functions which can be use with Python Lists: ['__add__', '__class__', '__contains__', '__delattr__', '__delitem__', '__dir__', '__doc__', '__eq__', '__format__', '__ge__', '__getattribute__', '__getitem__', '__gt__', '__hash__', '__iadd__', '__imul__', '__init__', '__iter__', '__le__', '__len__', '__lt__', '__mul__', '__ne__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__reversed__', '__rmul__', '__setattr__', '__setitem__', '__sizeof__', '__str__', '__subclasshook__', 'append', 'clear', 'copy', 'count', 'extend', 'index', 'insert', 'pop', 'remove', 'reverse', 'sort'] #PythonTutorialforBeginners #ProgrammingKnowledge #LearnPython #PythonCourse -------------------Online Courses to learn---------------------------- Blockchain Course - http://bit.ly/2Mmzcv0 Big Data Hadoop Course - http://bit.ly/2MV97PL Java - https://bit.ly/2H6wqXk C++ - https://bit.ly/2q8VWl1 AngularJS - https://bit.ly/2qebsLu Python - https://bit.ly/2Eq0VSt C- https://bit.ly/2HfZ6L8 Android - https://bit.ly/2qaRSAS Linux - https://bit.ly/2IwOuqz AWS Certified Solutions Architect - https://bit.ly/2JrGoAF Modern React with Redux - https://bit.ly/2H6wDtA MySQL - https://bit.ly/2qcF63Z ----------------------Follow--------------------------------------------- My Website - http://www.codebind.com My Blog - https://goo.gl/Nd2pFn My Facebook Page - https://goo.gl/eLp2cQ Google+ - https://goo.gl/lvC5FX Twitter - https://twitter.com/ProgrammingKnow Pinterest - https://goo.gl/kCInUp Text Case Converter - https://goo.gl/pVpcwL -------------------------Stuff I use to make videos ------------------- Stuff I use to make videos Windows notebook – http://amzn.to/2zcXPyF Apple MacBook Pro – http://amzn.to/2BTJBZ7 Ubuntu notebook - https://amzn.to/2GE4giY Desktop - http://amzn.to/2zct252 Microphone – http://amzn.to/2zcYbW1 notebook mouse – http://amzn.to/2BVs4Q3 ------------------Facebook Links ---------------------------------------- http://fb.me/ProgrammingKnowledgeLearning/ http://fb.me/AndroidTutorialsForBeginners http://fb.me/Programmingknowledge http://fb.me/CppProgrammingLanguage http://fb.me/JavaTutorialsAndCode http://fb.me/SQLiteTutorial http://fb.me/UbuntuLinuxTutorials http://fb.me/EasyOnlineConverter
Views: 8538 ProgrammingKnowledge
python TypeError: 'dict_keys' object does not support indexing
 
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python TypeError: 'dict_keys' object does not support indexing
Views: 1450 ATOM
Arrays in Python: Two Sum Problem
 
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In this video, we are going to be solving the so-called "Two-Sum Problem": Problem: Given an array of integers, return indices of the two numbers such that they add up to a specific target. You may assume that each input would have exactly one solution, and you may not use the same element twice. We investigate three different approaches to solving this problem. Method 1: A brute-force approach that takes O(n^2) time to solve with O(1) space. We loop through the array and create all possible pairings of elements. Method 2: A slightly better approach time-wise, taking O(n) time, but worse from a space standpoint, with a space complexity of O(n). In this approach, we make use of an auxiliary hash table to keep track of whether it's possible to construct the target based on the elements we've processed thus far in the array. Method 3: This approach has a time complexity of O(n) and a constant space complexity, O(1). Here, we have two indices that we keep track of, one at the front and one at the back. We move either the left or right indices based on whether the sum of the elements at these indices is either greater or lesser than the target element. The software written in this video is available at: https://github.com/vprusso/youtube_tutorials/blob/master/data_structures/arrays/two_sum.py Do you like the development environment I'm using in this video? It's a customized version of vim that's enhanced for Python development. If you want to see how I set up my vim, I have a series on this here: http://bit.ly/lp_vim If you've found this video helpful and want to stay up-to-date with the latest videos posted on this channel, please subscribe: http://bit.ly/lp_subscribe
Views: 5393 LucidProgramming
Programming in Swift: Core Concepts - Tuples  - raywenderlich.com
 
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Learn the basics of working in Swift 4 by way of this Swift programming course. Watch the full course over here: https://videos.raywenderlich.com/courses/90-programming-in-swift/lessons/1 --- About www.raywenderlich.com: raywenderlich.com is a website focused on developing high quality programming tutorials. Our goal is to take the coolest and most challenging topics and make them easy for everyone to learn – so we can all make amazing apps. Update course: https://videos.raywenderlich.com/courses/58-beginning-spritekit/lessons/1 We are also focused on developing a strong community. Our goal is to help each other reach our dreams through friendship and cooperation. As you can see below, a bunch of us have joined forces to make this happen: authors, editors, subject matter experts, app reviewers, and most importantly our amazing readers! --- Swift Tuples: (https://developer.apple.com/library/content/documentation/Swift/Conceptual/Swift_Programming_Language/TheBasics.html) Swift is a new programming language for iOS, macOS, watchOS, and tvOS app development. Nonetheless, many parts of Swift will be familiar from your experience of developing in C and Objective-C. Swift provides its own versions of all fundamental C and Objective-C types, including Int for integers, Double and Float for floating-point values, Bool for Boolean values, and String for textual data. Swift also provides powerful versions of the three primary collection types, Array, Set, and Dictionary, as described in Collection Types. Like C, Swift uses variables to store and refer to values by an identifying name. Swift also makes extensive use of variables whose values can’t be changed. These are known as constants, and are much more powerful than constants in C. Constants are used throughout Swift to make code safer and clearer in intent when you work with values that don’t need to change. In addition to familiar types, Swift introduces advanced types not found in Objective-C, such as tuples. Tuples enable you to create and pass around groupings of values. You can use a tuple to return multiple values from a function as a single compound value. Swift also introduces optional types, which handle the absence of a value. Optionals say either “there is a value, and it equals x” or “there isn’t a value at all”. Using optionals is similar to using nil with pointers in Objective-C, but they work for any type, not just classes. Not only are optionals safer and more expressive than nil pointers in Objective-C, they’re at the heart of many of Swift’s most powerful features. Tuples group multiple values into a single compound value. The values within a tuple can be of any type and don’t have to be of the same type as each other. In this example, (404, "Not Found") is a tuple that describes an HTTP status code. An HTTP status code is a special value returned by a web server whenever you request a web page. A status code of 404 Not Found is returned if you request a webpage that doesn’t exist. let http404Error = (404, "Not Found") // http404Error is of type (Int, String), and equals (404, "Not Found") The (404, "Not Found") tuple groups together an Int and a String to give the HTTP status code two separate values: a number and a human-readable description. It can be described as “a tuple of type (Int, String)”. You can create tuples from any permutation of types, and they can contain as many different types as you like. There’s nothing stopping you from having a tuple of type (Int, Int, Int), or (String, Bool), or indeed any other permutation you require. You can decompose a tuple’s contents into separate constants or variables, which you then access as usual: let (statusCode, statusMessage) = http404Error print("The status code is \(statusCode)") // Prints "The status code is 404" print("The status message is \(statusMessage)") // Prints "The status message is Not Found" If you only need some of the tuple’s values, ignore parts of the tuple with an underscore (_) when you decompose the tuple: let (justTheStatusCode, _) = http404Error print("The status code is \(justTheStatusCode)") // Prints "The status code is 404" Alternatively, access the individual element values in a tuple using index numbers starting at zero: print("The status code is \(http404Error.0)") // Prints "The status code is 404" print("The status message is \(http404Error.1)") // Prints "The status message is Not Found" Tuples are particularly useful as the return values of functions. A function that tries to retrieve a web page might return the (Int, String) tuple type to describe the success or failure of the page retrieval. By returning a tuple with two distinct values, each of a different type, the function provides more useful information about its outcome than if it could only return a single value of a single type.
Views: 1187 raywenderlich.com
Python#16 - Use of FOR Loop using range, list, tuple, slicing
 
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Please find the below link to learn slicing https://youtu.be/9fLUsXQAhH0 Find below link to know what is range https://youtu.be/Z2ZWj0Kw_EY Find the below link to understand how to create function https://youtu.be/uV5H5wAcIkQ
Views: 56 Techno Guru Class
5. Tuples, Lists, Aliasing, Mutability, and Cloning
 
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MIT 6.0001 Introduction to Computer Science and Programming in Python, Fall 2016 View the complete course: http://ocw.mit.edu/6-0001F16 Instructor: Dr. Ana Bell In this lecture, Dr. Bell introduces compound data types, such as lists and tuples, and explains the concepts of aliasing, mutability, and cloning. License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
Views: 59182 MIT OpenCourseWare
Python Lists  ||  Python Tutorial  ||  Learn Python Programming
 
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Lists are a way to store ordered data. In this Python tutorial, we show you how to create lists, access elements by index, slice lists, join two lists (concatenation), and more. We will talk about sets, dictionaries and tuples in separate videos. ➢➢➢➢➢➢➢➢➢➢ To learn Python, you can watch our playlist from the beginning: https://www.youtube.com/watch?v=bY6m6_IIN94&list=PLi01XoE8jYohWFPpC17Z-wWhPOSuh8Er- ➢➢➢➢➢➢➢➢➢➢ We recommend: Python Cookbook, Third edition from O’Reilly http://amzn.to/2sCNYlZ The Mythical Man Month - Essays on Software Engineering & Project Management http://amzn.to/2tYdNeP Shop Amazon Used Textbooks - Save up to 90% http://amzn.to/2pllk4B ➢➢➢➢➢➢➢➢➢➢ Subscribe to Socratica: http://bit.ly/1ixuu9W To support more videos from Socratica, visit Socratica Patreon https://www.patreon.com/socratica Socratica Paypal https://www.paypal.me/socratica We also accept Bitcoin! :) Our address is: 1EttYyGwJmpy9bLY2UcmEqMJuBfaZ1HdG9 ➢➢➢➢➢➢➢➢➢➢ Python instructor: Ulka Simone Mohanty Written & Produced by Michael Harrison FX by Andriy Kostyuk
Views: 108957 Socratica
#4 Python Tutorial for Beginners | Variables in Python
 
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Python Tutorial to learn Python programming with examples Complete Python Tutorial for Beginners Playlist : https://www.youtube.com/watch?v=hEgO047GxaQ&t=0s&index=2&list=PLsyeobzWxl7poL9JTVyndKe62ieoN-MZ3 Python Tutorial in Hindi : https://www.youtube.com/watch?v=JNbup20svwU&list=PLk_Jw3TebqxD7JYo0vnnFvVCEv5hON_ew In this video we will see : - What is variable - Why do we need them - How to assign value to variable - Fetching value of previous operation - String value to variable - Fetching value of string variable by index number - Finding length of string Editing Monitors : https://amzn.to/2RfKWgL https://amzn.to/2Q665JW https://amzn.to/2OUP21a. Editing Laptop : ASUS ROG Strix - (new version) https://amzn.to/2RhumwO Camera : https://amzn.to/2OR56AV lens : https://amzn.to/2JihtQo Mics https://amzn.to/2RlIe9F https://amzn.to/2yDkx5F Check out our website: http://www.telusko.com Follow Telusko on Twitter: https://twitter.com/navinreddy20 Follow on Facebook: Telusko : https://www.facebook.com/teluskolearnings Navin Reddy : https://www.facebook.com/navintelusko Follow Navin Reddy on Instagram: https://www.instagram.com/navinreddy20 Subscribe to our other channel: Navin Reddy : https://www.youtube.com/channel/UCxmkk8bMSOF-UBF43z-pdGQ?sub_confirmation=1 Telusko Hindi : https://www.youtube.com/channel/UCitzw4ROeTVGRRLnCPws-cw?sub_confirmation=1 Donation: PayPal Id : navinreddy20 Patreon : navinreddy20 http://www.telusko.com/contactus
Views: 313891 Telusko
Arrays in Python / Numpy
 
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Arrays are collections of strings, numbers, or other objects. This tutorial demonstrates how to create and manipulate arrays in Python with Numpy.
Views: 135726 APMonitor.com
Python 3 Programming Tutorial - Multi-dimensional List
 
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In this Python 3 programming tutorial, we cover the multi-dimensional list. Up until now, we have focused on single dimensional lists, but this is limiting. In programming, we are able to create lists with infinite depth. Here's how! Sample code for this basics series: http://pythonprogramming.net/beginner-python-programming-tutorials/ Python 3 Programming tutorial Playlist: http://www.youtube.com/watch?v=oVp1vrfL_w4&feature=share&list=PLQVvvaa0QuDe8XSftW-RAxdo6OmaeL85M http://seaofbtc.com http://sentdex.com http://hkinsley.com https://twitter.com/sentdex Bitcoin donations: 1GV7srgR4NJx4vrk7avCmmVQQrqmv87ty6
Views: 155395 sentdex
Python TypeError: 'NoneType' object is not iterable
 
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Python TypeError: 'NoneType' object is not iterable
Views: 6398 ATOM
Delete item from a dictinary while iterating over it PYTHON
 
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Solving the error: RuntimeError: dictionary changed size during iteration for everyone who using Python 3+ and trying to delete item from a dictinary while iterating over it PYTHON
Views: 250 Trijicon2
How to Sort CSV files and lists in Python
 
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This is a tutorial concerning how to sort CSV files and lists easily within python by column. The logic possibly by programming plus the simplicity of being able to sort columns makes python a superb choice for managing CSV documents and lists that are delimited by something. Sentdex.com Facebook.com/sentdex Twitter.com/sentdex
Views: 50690 sentdex
Python - find indexes of an item in list or string
 
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The code to make a function that returns all the indexes of an item that is in a list or a string.
Views: 159 Giovanni Python
tuples combined
 
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What are tuples?: A tuple is: - an ordered list of values, where the type of each value is fixed. - a group of zero or more values represented as one value. - not a collection. Arrays or Dictionaries are collection types. - defined as anonymous struct that can be used in many ways, and one of them is to make returning multiple values from a function much easier. - a value type, not a reference type. This means that instead of being passed around by reference tuple values are copied. - a tuple is more similar to enumeration, struct, or class than an array or dictionary. Why they exist?: While tuples aren't collections, they do group multiple values. Similar to arrays and dictionaries, tuples can contain values of any type. The key difference, however, is that the values stored in a tuple don't need to be of the same type. Why Tuples over Arrays (see below)? As per http://stackoverflow.com/questions/26773189/why-to-use-tuples-when-we-can-use-array-to-return-multiple-values-in-swift The advantages of using a tuple instead of an array are: - multiple types can be stored in a tuple, whereas in an array you are restricted to one type only (unless you use [AnyObject]) - fixed number of values: you cannot pass less or more parameters than expected, whereas in an array you can put any number of arguments - strongly typed: if parameters of different types are passed in the wrong positions, the compiler will detect that, whereas using an array that won't happen - named: it's possible to associate a name to each parameter - assignment is easier and more flexible - for example, the return value can be assigned to a tuple: - or all parameters can be automatically extracted and assigned to variables - and it's possible to ignore some values - similarity with function parameters: when a function is called, the parameters you pass are actually a tuple. Why Tuples instead of Dictionaries: Per stack overflow http://stackoverflow.com/a/27631188/2226172 Major difference: - If you need to return multiple values from a method you can use a tuple. - Tuple won't need any key value pairs like Dictionary. - A tuple can contain only the predefined number of values, in dictionary there is no such limitation. - Tuple can contain different values with different datatype, dictionary can contain only on datatype value at a time - Tuples are particularly useful for returning multiple values from a function. Dictionary can be used as a model object. How: Index Notation: The values comprising a tuple can be accessed using an index-like notation like this let triple = (1, 2, 3) let first = triple.0 The same notation can be use to modify a mutable tuple, for example var mutableTriple = (1, 2, 3) mutableTriple.2 = 5 Pattern Matching: let triple = (1, 2, 3) let (x, y, z) = triple x having the value 1, y having the value 2, and z having the value 3. Named Values: var fishes = (first:"cod", second:"dab", third:"eel") let first = fishes.first let coordinates = (latitude: 48.8582, longitude: 2.2945) coordinates.latitude //48.8582 coordinates.longitude //2.2945 var result = (200, "OK", true) let (statusCode, statusMessage, hasBody) = result When: In general, tuples are particular useful for relatively simple, temporary groups of related values such as the values being returned from a function or method or when passing around information between different objects. Start with a tuple and see if it does the job. If two values with the same type structure are the same (e.g. String and Int pairs), excellent. If you want more type-safety and a nominal type, use structs. For example, if you want to disambiguate between currency and mass. Finally, if you need multiple mutually exclusive cases (for example, either EUR or USD or YEN), use enums. When not to use tuples: If your data structure is likely to persist beyond a temporary scope, model it as a class or structure. If the tuple contains elements which are optional and mutually exclusive: An enum is a better way to express that. Indications when you may prefer a data structure to a tuple type: - The strongest indication is that you have a good name for the group of elements of a tuple. Then choose a struct or class with that name. - If you would like to define functions that take the tuple as a parameter, try to come up with a name for a struct or class, and define the function as a method on that type.
Views: 175 Lionel Ramos
Python - (10) - String Formatting - Part - 1
 
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This video explains string Formatting in #python. concatenating string with integer. type conversion to #string. using print function with string formatting. #stringfromatting GitHub Link: https://github.com/amitforamit/curquestPythonBasics For any doubt or clarification, please comment or connect me at any of the following : Gmail: [email protected] LinkedIn : https://www.linkedin.com/in/amitamu Instagram: https://www.instagram.com/python.coding Twitter: https://twitter.com/amitamu Quora: https://www.quora.com/profile/Amit-Kumar-85 Facebook: https://www.facebook.com/curquest/
Views: 154 curquest
Introduction to Python Network Programming for Network Architects and Engineers  [repeated session]
 
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"A classroom session from the DevNet Zone at Cisco Live Berlin 2017. This is a Part 1, 2 and 3 in a 3 part series that introduces participants to two of the core building blocks of many automation initiatives - the Python programming language and network programming concepts. No previous programming background is required. The 3 sessions may be taken as a series or individually. See DEVNET-1041 and DEVNET-1042 for description of Parts 2 and 3. The goal for this session is for you to be able to develop a set of Python ""building block"" templates that can be used as the foundation for more advanced topics. These templates include; how to take input from the Python command line or from the keyboard (in the form of an arbitrary domain name), how to leverage the Python socket library to retrieve the IP address of the Domain Name device, how to leverage Python to save those Domain Name's and IP addresses to a simple log file, and to be able to demonstrate a simple UDP based client/server countdown timer application. Join DevNet today! It's free, easy, and gives you access to useful resources and tools. Come learn, code, inspire, and connect. https://developer.cisco.com/site/devnet/overview/index.gsp
Views: 33018 Cisco DevNet
Learn Python Programming - 9 - String Slicing - 2 (Eng-Hindi)
 
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-~-~~-~~~-~~-~- Please watch: "PL vs FOL | Artificial Intelligence | (Eng-Hindi) | #3" https://www.youtube.com/watch?v=GS3HKR6CV8E -~-~~-~~~-~~-~-
Views: 1902 Well Academy
Python Tutorial: Python String Basics - Python Basics #10
 
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In this Python Tutorial we talk about Python String Basics visit our website for more info - http://learnpythontutorial.com/python-string-basics-python-tutorial/ If you have any questions about this Python tutorial leave a comment we will help your out. Do not forget to subscribe we post a new Python tutorial daily so you will not want to miss it. Our website has the full Python Tutorial. In today's Python tutorial, we are going to take a gander at an alternate critical information sort that we utilize regularly as a part of Python. We are going to concentrate on an information sort called a string. A string is a succession of information like content or a gathering of bytes. In this tutorial, we are going to just be concentrating on a prologue to the Python string. We will dive deeper into strings in part 4 of this arrangement. What is a String? A string contains a rundown of characters in a particular order(sequence). The characters in a string can be letters, numbers, uncommon characters like images and spaces. Strings have no restriction on to what extent they may be and you might likewise take a string that contains no characters this is known as a "void string". What is the Python String Syntax? The linguistic structure of a string in Python is truly basic. We make a string by encasing characters in quotes which can be single quotes, twofold quotes or triple quotes. Which strategy you utilize is totally up to you. Through out the tutorials I will be utilizing single quotes for the majority of the tutorials aside from when certain circumstances emerge where single quotes are not the best choice. Python String Syntax 'This is a string in Python' "This is a string in Python" '''This is a string in Python''' """This is a string in Python""" We can not begin with single quote and end with a twofold quote. We must begin and end with same kind of quote.
Views: 10798 Master Code Online
Python Tutorial v3.2.5 Lesson 23.4 - Tuple Data Type
 
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1:20 Skip the introduction to Lesson 23.4 2:52 Skip introductory list creation and skip directly to tuples. 6:08 Skip to the creation of a small program exemplifying tuples. There is no Challenge Program for Lesson 23.4 Lesson 23.4 introduces the Tuple data type and compares it to a list variable. Lists and Tuples share many commonalities: they are both considered a single value by Python, they both can contain an infinite amount of data, and elements in these data types can be accessed using index notation. The main difference has to do with the mutability of the two data types. A list variable is mutable while a tuple is not. Finally, a short program will be developed explaining how a tuple is created when a return statement is asked to return multiple pieces of information, unless specifically told to return a list. This is an introductory series of Python tutorials. This course, from start to finish, is designed to help someone who has never programmed before learn the basics of coding in Python. As this series continues, we examine more advanced Python techniques, functions, and methods. You can download a copy of Python from http://www.python.org/downloads/. Keep in mind this tutorial is using an older version of Python, v3.2.5. You will need to click on the "View Older Releases" button to use this specific version. Using the newer versions will not be an issue at this point, but when the lesson proceeds to basic graphics, the Pygame Module we'll use does not support v3.3+ at this time.
52 - Why Python Set Does not Support Indexing?
 
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Why Python Set Does not Support Indexing?
Views: 27 Gurukul Wisdom
Core Algorithms - Finding Max/Min Element: Python 3
 
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This video looks at how to find the maximum or minimum element in a list in python 3
Views: 16504 Paul Miskew
004_Python Datatypes
 
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Data types in Python  Everything is an object in Python programming, data types are actually classes and variables are an instance (object) of these classes.  There are various data types in Python. Python Numbers  Integers  floating point numbers  complex numbers come under Python numbers.  They are defined as int, float and complex class in Python.  We can use the type() function to know which class a variable or a value belongs  We can use the instance() function to check if an object belongs to a particular class. Example : a = 5 print(a, "is of type", type(a)) a = 2.0 print(a, "is of type", type(a)) a = 1+2j print(a,"iscomplexnumber?",isinstance(1+2j,complex))  Integers can be of any length, it is only limited by the memory available.  A floating point number is accurate up to 15 decimal places.  Complex numbers are written in the form, x + yj,  where x is the real part and  y is the imaginary part. 45678901234568 (1+2j) Python List  The list is an ordered sequence of items. All the items in a list do not need to be of the same type.  Declaring a list is pretty straight forward. Items separated by commas are enclosed within brackets [ ].  We can use the slicing operator [ ] to extract an item or a range of items from a list. Index starts form 0 in Python. a = [5,10,15,20,25,30,35,40] # a[2] = 15 print("a[2] = ", a[2]) # a[0:3] = [5, 10, 15] print("a[0:3] = ", a[0:3]) # a[5:] = [30, 35, 40] print("a[5:] = ", a[5:])  Lists are mutable, meaning, value of elements of a list can be altered. [1, 2, 3 ] Python Tuple  A tuple is an ordered sequence of items same as a list. The only difference is that tuples are immutable. Tuples once created cannot be modified.  Tuples are used to write-protect data and are usually faster than list as they cannot change dynamically.  It is defined within parentheses () where items are separated by commas.  We can use the slicing operator [] to extract items but we cannot change its value. t = (5,'program', 1+3j) # t[1] = 'program' print("t[1] = ", t[1]) # t[0:3] = (5, 'program', (1+3j)) print("t[0:3] = ", t[0:3]) # Generates error # Tuples are immutable t[0] = 10 Python Strings  The string is a sequence of Unicode characters.  We can use single quotes or double quotes to represent strings.  Multi-line strings can be denoted using triple quotes, ''' or """.  Like list and tuple, slicing operator [ ] can be used with string. Strings are immutable. s = 'Hello world!' # s[4] = 'o' print("s[4] = ", s[4]) # s[6:11] = 'world' print("s[6:11] = ", s[6:11]) # Generates error # Strings are immutable in Python s[5] ='d' Python Set  Set is an unordered collection of unique items.  Set is defined by values separated by a comma inside braces { }. a = {5,2,3,1,4} # printing set variable print("a = ", a) # data type of variable a print(type(a))  Set have unique values. They eliminate duplicates. {1,2,3}  Set is an unordered collection, indexing has no meaning. Hence the slicing operator [] does not work. Traceback(most recent call last): TypeError:' set' object does not support indexing Python Dictionary  Dictionary is an unordered collection of key-value pairs.  It is generally used when we have a huge amount of data.  Dictionaries are optimized for retrieving data.  We must know the key to retrieve the value.  Dictionaries are defined within braces {} with each item being a pair in the form key: value. Key and value can be of any type.
Views: 11 SOC SOFTECH
Python Tutorial: Find The Length of a String in Python #44
 
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Python 3.7 Version - https://youtu.be/Apg2hO8rr5M Find the Length of a String in Python In this tutorial, we are going to look at how to find the length of a string in Python. This will be a short tutorial there really is not much to find a length of a string. Why would we want to find a length of a string? Say you wish to put a minimum number of characters on a string for a user's password or username. Using len() built-in function would allow us to find the len of the string if the user name or password is long enough we will allow them to use the user name or password. Of course, there is other reason why you may need to find the length of a string. Len() Built-in Function Example a = "This is my string and it is kinda long" len(a) 38 print(len(a)) 38 Example of Len() in Action Above I was talking about taking a user's username and password and make sure it is long enough let's take a look at a little program that will allow us to check the username and password to see if they are long enough. username = input("Your username? Min 4 Characters. ") password = input("Your Password? Min 6 Characters. ") What did we do above? First we get the username from the user using input and assign the users input a variable named username. Then we do the same for password but assign the variable a name of password. Then we use an if statement to check if the user add enough characters for the username and password. Note username must be at least four characters and password must be 6 and we check this by using the len() built-in function on variables then use comparison operators to check if they are long enough. If the username and password are long enough we print "Your Username and Password are long enough" and if not we will print "Your Username and Password are not secure enough" If you have any questions about finding the length of string leave a comment below and I will help you out.
Views: 6595 Master Code Online
Python Tutorial: Python Numbers #24
 
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Visit our website at http://learnpythontutorial.com/python-numbers-python-tutorial-2/ Python Numbers Welcome to Python Numbers in chapter 4 of our Python Tutorials we are going to focus on numbers, math that we can perform in Python, operators used for numbers, a couple math modules and booleans. Like the previous chapter, we will go deep into the Python numbers and focus on each and every aspect of Python numbers. Python Numbers Tutorials Below you will find a list of the scheduled Python numbers tutorials. These tutorials are not set in stone and can change as we move along. Why are floating point calculations so inaccurate? Python Addition - Scheduled for 3/13/2015 Python Subtraction Python Multiplication Python Remainder Python Division Python Exponentiation Python Mixed Operators Flow Python Parenthese Flow Python Comparisons Python Fractions Python Decimals Python Sets Python Booleans Python Math Module
Views: 3101 Master Code Online
How To Use The List Built-in Function
 
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Python 3.7 Version - https://youtu.be/c9ka5hEwwGM Be sure to like, share and comment to show your support for our tutorials. ======================================= Channel - https://goo.gl/pnKLqE Playlist For This Tutorial - https://goo.gl/EyZFti Latest Video - https://goo.gl/atWRkF Facebook - https://www.facebook.com/mastercodeonline/ Twitter - https://twitter.com/mastercodeonlin?lang=en Website - https://www.mastercode.online ====================================== List Built-in Function In this Python tutorial, we discuss the list built-in function in Python. The list built-in function will iterate through the argument and will return a list. If the function is not provided a argument then Python will return an empty list. We can only technically on iterable objects in Python. Iterable objects in Python include strings, dictionaries, list, and tuples. Integers are not iterable. List Built-in Function Syntax list(argument) List() - Either takes a argument or can be blank. If the built-in function list is not provided an argument then Python will return an empty list. argument - The argument must be an object that can be iterated. Most objects are iterable but integers and floats are not iterable. Examples of the List Built-in Function List Function On A String list('Mississippi') ['M', 'i', 's', 's', 'i', 's', 's', 'i', 'p', 'p', 'i'] list('Mississippi') - In this example, we call the list() function and provide a string argument to the function. The function will iterate through each character and insert them into a list as their own object. ['M', 'i', 's', 's', 'i', 's', 's', 'i', 'p', 'p', 'i'] - We are returned a list that contains our characters from the string argument and each character is its own object contained in a string. List Function on a List list(['Dog', 'Cat', 'Horse', 'Bunny']) ['Dog', 'Cat', 'Horse', 'Bunny'] list(['Dog', 'Cat', 'Horse', 'Bunny']) - In this example, we call the list function and provide an argument in the list format. The list function will iterate through each object in the list and return each object contained in a list. This will actually just spit back the same list in the argument. This makes no sense to call list function on a list. ['Dog', 'Cat', 'Horse', 'Bunny'] - We are returned a new list that is the exactly the same as our argument. List Function on a Dictionary list({'Color': 'Red', 'Pet': 'Dog'}) ['Color', 'Pet'] list({'Color': 'Red', 'Pet': 'Dog'}) - In this example we call the list function on a dictionary. The list function will iterate through the keys contained in a dictionary and return the keys to us in a list format. ['Color', 'Pet'] - We are returned a list that contains the keys from the Python dictionary. List Function on a Tuple list(('Dog', 'Cat', 'Rabbit')) ['Dog', 'Cat', 'Rabbit'] list(('Dog', 'Cat', 'Rabbit')) - In this example we call the list function on a tuple. The list function will iterate through the objects in tuple and return a list of those objects to us. ['Dog', 'Cat', 'Rabbit'] - We are returned a list of the objects that were contained in our tuple argument. Conclusion In this Python tutorial, we learned about the list built-in function that allows us to create list from other objects in Python. If you have any questions leave a comment below.
Views: 2783 Master Code Online
Sorting in Python  ||  Learn Python Programming  (Computer Science)
 
06:24
Sorting is a fundamental task in software engineering. In Python, there are a variety of ways to sort lists, tuples, and other objects. Today we talk about the sort() method which is an in-place algorithm for sorting lists. We also cover the sorted() function which can be used on more objects, and creates a sorted copy, leaving the original object unchanged. We were able to make this Python video with the help of our Patrons on Patreon! We would like to recognize the generosity of our VIP Patrons Matt Peters, Andrew Mengede, Martin Stephens, and Markie Ward. Thank you so much for helping us continue our work! ➢➢➢➢➢➢➢➢➢➢ To​ ​help​ us continue making videos,​ ​you​ ​can​ ​support​ Socratica at: ​Patreon​: https://www.patreon.com/socratica Socratica Paypal: https://www.paypal.me/socratica We also accept Bitcoin! :) Our​ ​address​ ​is: 1EttYyGwJmpy9bLY2UcmEqMJuBfaZ1HdG9 Thank​ ​you!! ➢➢➢➢➢➢➢➢➢➢ If you’d like a reference book, we recommend “Python Cookbook, 3rd Edition” from O’Reilly: http://amzn.to/2sCNYlZ The Mythical Man Month - Essays on Software Engineering & Project Management http://amzn.to/2tYdNeP ➢➢➢➢➢➢➢➢➢➢ You​ ​can​ ​also​ ​follow​ ​Socratica​ ​on: -​ ​Twitter:​ ​@socratica -​ ​Instagram:​ ​@SocraticaStudios -​ ​Facebook:​ ​@SocraticaStudios ➢➢➢➢➢➢➢➢➢➢ Python instructor: Ulka Simone Mohanty (@ulkam on Twitter) Written & Produced by Michael Harrison (@mlh496 on Twitter)
Views: 78804 Socratica
HackerRank Solutions | Python | List Comprehensions |
 
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Problem- Let's learn about list comprehensions! You are given three integers x, y and z representing the dimensions of a cuboid along with an integer N. You have to print a list of all possible coordinates given by(i, j, k) on a 3D grid where the sum of i+j+k is not equal to N.
Views: 588 Dhiraj Bezbaruah
Python TypeError: unhashable type: 'list'
 
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Python TypeError: unhashable type: 'list'
Views: 4890 ATOM
Python Tutorial for Beginners 8 - Python Slices or Slicing
 
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In this video I am going to show How to use Slice function or slicing with Python Collections. Also I am going to show how to use Negative index with Python Collections. So What is Python Slice? A slize is a span of items that are taken from a sequence List slicing format: list[start : end: step]. Span is a list containing copies of elements from start up to, but not including, end If start not specified, 0 is used for start index. If end not specified, len(list) is used for end index. Slicing expressions can include a step value and negative indexes relative to end of list. And What is Negative Indexing In Python: I a Python Collection such as Lists, Strings, Tuples, Bytes .. we can refer to an element by a negative index representing how far it is from the end. example # +---+---+---+---+---+---+ # | P | y | t | h | o | n | # +---+---+---+---+---+---+ # 0 1 2 3 4 5 ---- Positive Index # -6 -5 -4 -3 -2 -1 ---- Negative Index -------------------Online Courses to learn---------------------------- Blockchain Course - http://bit.ly/2Mmzcv0 Big Data Hadoop Course - http://bit.ly/2MV97PL Java - https://bit.ly/2H6wqXk C++ - https://bit.ly/2q8VWl1 AngularJS - https://bit.ly/2qebsLu Python - https://bit.ly/2Eq0VSt C- https://bit.ly/2HfZ6L8 Android - https://bit.ly/2qaRSAS Linux - https://bit.ly/2IwOuqz AWS Certified Solutions Architect - https://bit.ly/2JrGoAF Modern React with Redux - https://bit.ly/2H6wDtA MySQL - https://bit.ly/2qcF63Z ----------------------Follow--------------------------------------------- My Website - http://www.codebind.com My Blog - https://goo.gl/Nd2pFn My Facebook Page - https://goo.gl/eLp2cQ Google+ - https://goo.gl/lvC5FX Twitter - https://twitter.com/ProgrammingKnow Pinterest - https://goo.gl/kCInUp Text Case Converter - https://goo.gl/pVpcwL -------------------------Stuff I use to make videos ------------------- Stuff I use to make videos Windows notebook – http://amzn.to/2zcXPyF Apple MacBook Pro – http://amzn.to/2BTJBZ7 Ubuntu notebook - https://amzn.to/2GE4giY Desktop - http://amzn.to/2zct252 Microphone – http://amzn.to/2zcYbW1 notebook mouse – http://amzn.to/2BVs4Q3 ------------------Facebook Links ---------------------------------------- http://fb.me/ProgrammingKnowledgeLearning/ http://fb.me/AndroidTutorialsForBeginners http://fb.me/Programmingknowledge http://fb.me/CppProgrammingLanguage http://fb.me/JavaTutorialsAndCode http://fb.me/SQLiteTutorial http://fb.me/UbuntuLinuxTutorials http://fb.me/EasyOnlineConverter - Python Slices python tutorial for beginners pdf python tutorial for beginners with examples best python tutorial for beginners python tutorial for beginners ppt python tutorial for beginners video basic python tutorial for beginners learn python tutorial Verwandte Suchanfragen zu python slices python string multiple lines python slice list python string slice python länge einer liste python multiple assignment python string to tuple python string abschneiden python compare tuples
Views: 191695 ProgrammingKnowledge
Python Tutorial v3.2.5 Lesson 21.1 - Indexing and Slicing Strings
 
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1:41 Skip the introduction to Lesson 21.1 11:39 Skip directly to the Lesson 21.1 Challenge Program Lesson 21.1 introduces indexes and indexing notation as it relates to string variables. String indexing involves pulling out a specific character from a string using that characters index value. Slicing is pulling out a substring, or a small string contained within a larger string. In isolation, these are fairly simple concepts, but become very important when added to lists, for loops, and classes (which will all be addressed in future lessons). This is an introductory series of Python tutorials. This course, from start to finish, is designed to help someone who has never programmed before learn the basics of coding in Python. As this series continues, we examine more advanced Python techniques, functions, and methods. You can download a copy of Python from http://www.python.org/downloads/. Keep in mind this tutorial is using an older version of Python, v3.2.5. You will need to click on the "View Older Releases" button to use this specific version. Using the newer versions will not be an issue at this point, but when the lesson proceeds to basic graphics, the Pygame Module we'll use does not support v3.3+ at this time.
Python Tutorial v3.2.5 Lesson 23.6 - List Methods (2 of 2)
 
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1:19 Skip the Introduction to Lesson 23.6 2:01 Skip to an example of the .sort() method. 3:17 Skip to an example of the .insert(index, value) method. 5:46 Skip to an example of the .count(value) method. 6:44 Skip to an example of the .index(value) method. 8:09 Skip to an example of the random.shuffle(list) method. 9:51 Skip to an example of the value in list format. There is no Challenge Program for Lesson 23.6 Lesson 23.6 is part of a short series of videos that introduces list methods. List methods are called on the list data type (most commonly stored in a variable) that allow us to add, change, and manipulate the list. In prior lessons, we reviewed how to access elements of a list through their index location and even change their value. Methods addressed in part 1 add new functionality, such as adding new elements to a list (as opposed to changing values that already exist), removing items from a list, returning items from a list, and reversing the order of the list. Methods addressed in part 2 add functionality such as alphabetizing and sorting a list, inserting items to the middle of the list, and even randomizing objects in a list. This is an introductory series of Python tutorials. This course, from start to finish, is designed to help someone who has never programmed before learn the basics of coding in Python. As this series continues, we examine more advanced Python techniques, functions, and methods. You can download a copy of Python from http://www.python.org/downloads/. Keep in mind this tutorial is using an older version of Python, v3.2.5. You will need to click on the "View Older Releases" button to use this specific version. Using the newer versions will not be an issue at this point, but when the lesson proceeds to basic graphics, the Pygame Module we'll use does not support v3.3+ at this time.
Python AttributeError: 'NoneType' object has no attribute 'append'
 
02:02
Python AttributeError: 'NoneType' object has no attribute 'append'
Views: 11335 ATOM
Python Tutorial v3.2.5 Lesson 23.1 - List Data Type Introduction (1 of 2)
 
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1:38 Skip the introduction to Lesson 23.1 5:01 Skip to the use of the min(), max(), and sum() functions. 7:19 Skip to using index notation to access list elements. There is no Challenge Program for Lesson 23.1 Lesson 23.1 introduces the List data type. Lists are created by using brackets [] and separating items in the list with a comma. Each item in a list is referred to as an element of the list. These elements can by integers, floats, strings, or any other data type. In addition, lists can hold multiple data types at ones (such as number and strings together). Lists are among the most useful of all the data types and all advanced programs will use lists. This lesson focuses mainly on demonstrating list properties through the Python shell. Future videos will focus more on the application of lists rather than singular properties. Due to the length of this video, it has been separated into 2 parts. This is an introductory series of Python tutorials. This course, from start to finish, is designed to help someone who has never programmed before learn the basics of coding in Python. As this series continues, we examine more advanced Python techniques, functions, and methods. You can download a copy of Python from http://www.python.org/downloads/. Keep in mind this tutorial is using an older version of Python, v3.2.5. You will need to click on the "View Older Releases" button to use this specific version. Using the newer versions will not be an issue at this point, but when the lesson proceeds to basic graphics, the Pygame Module we'll use does not support v3.3+ at this time.
Python Tutorial 12.0 - File Input Output
 
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Everything You Need to Know is a collaboration of people who have dedicated their time to helping educate others. Please support by subscribing. This video is great for a recap on Everything You Need To Know about File Input Output in Python. Please follow exercises (link at the end of video) if you are new to Python or we have not explained it well enough). Google+ : https://plus.google.com/u/0/115589514656500200774/posts Facebook : https://www.facebook.com/EYN2K?ref=hl PowerPoint slides available from : https://www.mediafire.com/folder/rsra5tujy0amn/Power_Points ***SPECIAL THANKYOU*** Lino Rise - linorise.com Blender 3D
Solving Algorithms (Python) Round 2
 
05:46
Solved 85 algorithms 20 CodeWars(7kyu), 10 InterviewCake, 5 LeetCode, 5 Firecode, 2 CTCI, 3 random (Happy Numbers, Lucky Numbers, return index...) Twitter: @colorfulcodes
Views: 71 Colorful Codes
Python Tutorial for Beginners 5: Dictionaries - Working with Key-Value Pairs
 
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In this Python Beginner Tutorial, we will begin learning about dictionaries. Dictionaries allow us to work with key-value pairs in Python. We will go over dictionary methods, how to add and remove values, and also how to loop through the key-value pairs. Let's get started. The code from this video can be found at: https://github.com/CoreyMSchafer/code_snippets/tree/master/Python-Dicts Watch the full Python Beginner Series here: https://www.youtube.com/playlist?list=PL-osiE80TeTskrapNbzXhwoFUiLCjGgY7 ✅ Support My Channel Through Patreon: https://www.patreon.com/coreyms ✅ Become a Channel Member: https://www.youtube.com/channel/UCCezIgC97PvUuR4_gbFUs5g/join ✅ One-Time Contribution Through PayPal: https://goo.gl/649HFY ✅ Cryptocurrency Donations: Bitcoin Wallet - 3MPH8oY2EAgbLVy7RBMinwcBntggi7qeG3 Ethereum Wallet - 0x151649418616068fB46C3598083817101d3bCD33 Litecoin Wallet - MPvEBY5fxGkmPQgocfJbxP6EmTo5UUXMot ✅ Corey's Public Amazon Wishlist http://a.co/inIyro1 ✅ Equipment I Use and Books I Recommend: https://www.amazon.com/shop/coreyschafer ▶️ You Can Find Me On: My Website - http://coreyms.com/ My Second Channel - https://www.youtube.com/c/coreymschafer Facebook - https://www.facebook.com/CoreyMSchafer Twitter - https://twitter.com/CoreyMSchafer Instagram - https://www.instagram.com/coreymschafer/ #Python
Views: 258919 Corey Schafer
Python Tutorial v3.2.5 Lesson 23.3 - List Mutability
 
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1:17 Skip the introduction to Lesson 23.3 3:39 Skip to list creation and a demonstration of list mutability. 7:17 Skip to the tracing of the code through the visualizer. There is no Challenge Program for Lesson 23.3 Lesson 23.3 discusses the important topic of list mutability. Mutability is the ability of data types and variables to be changed. Strings, for example, are considered immutable. This means that I cannot change individual segments of a string (for example, changing the word 'House' to 'Mouse' simply by changing the first letter of the word). Rather, I have to change the entire string. Lists are mutable. This means that using index location, I can change individual elements of a list. Also discussed in this lesson is the fact that list variables are "objects", giving them global access even within functions. This is an introductory series of Python tutorials. This course, from start to finish, is designed to help someone who has never programmed before learn the basics of coding in Python. As this series continues, we examine more advanced Python techniques, functions, and methods. You can download a copy of Python from http://www.python.org/downloads/. Keep in mind this tutorial is using an older version of Python, v3.2.5. You will need to click on the "View Older Releases" button to use this specific version. Using the newer versions will not be an issue at this point, but when the lesson proceeds to basic graphics, the Pygame Module we'll use does not support v3.3+ at this time.
Python Lists
 
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Understanding the basics of lists in Python
Views: 331571 Khan Academy
2.1 Python Data types Strings and numbers
 
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Literals • Strings – Normal string literals – Multi-line string literals – Raw strings – Concatenation of adjacent string literals • Numbers • Lists, tuples, sets, dictionaries Python's built-in types Type Mutable Description Syntax example int immutable Integer of unlimited magnitude 123 float immutable Floating point number 123.4 complex immutable Complex number with real and imaginary parts 123+4j str immutable A character string: sequence of Unicode codepoints cbtu', "cbtu" tuple immutable Can contain mixed types 2,4.0, 'string1', True list mutable Can contain mixed types [2, 4.0, 'string1', True] dict mutable Associative array (or dictionary) of key and value pairs; can contain mixed types (keys and values), keys must be a hashable type empdir = {'Mike': 4101, 'John': 4102} dict([('Mike', 4101), ('John', 4102)]) set mutable Unordered set, contains no duplicates; can contain mixed types, if hashable {4.0, 'string', True} frozenset immutable Unordered set, contains no duplicates; can contain mixed types, if hashable frozenset([4.0, 'string1', True]) bool immutable Boolean value TRUE, FALSE ellipsis An ellipsis placeholder to be used as an index in NumPy arrays ... Typing • Python uses duck typing and has typed objects but untyped variable names. Type constraints are not checked at compile time. • Python is strongly typed, forbidding operations that are not well-defined (ex. adding a number to a string) • Python allows programmers to define their own types using classes. New instances of classes are constructed by calling the class. Duck typing • Duck typing in computer programming is an application of the duck test—"If it walks like a duck and it quacks like a duck, then it must be a duck"—to determine if an object can be used for a particular purpose. • In duck typing, an object's suitability is determined by the presence of certain methods and properties, rather than the type of the object itself. Strings • Python has these kinds of string literals: – Normal string literals • Either single or double quotes can be used to quote strings – Multi-line string literals • begin and end with a series of three single or double quotes – Raw strings • denoted by placing a literal r before the opening quote * In the interactive interpreter, the output string is enclosed in quotes Literals - Strings Docstrings (documentation strings) • The first statement of the function body can optionally be a string literal; this string literal is the function’s documentation string, or docstring. • Docstrings are used to produce online help documentation. • Docstrings: strings that are located alone without assignment as the first indented line within a module, class, method or function, automatically set their contents as an attribute named __doc__ • Docstrings are intended to store a human-readable description of the object's purpose, behavior, and usage. Literals - Numbers • Int, Integer is arbitrary-length and automatically increases the storage size as necessary. • Float, floating point numbers has dot in a literal. • Complex numbers are indicated with the J or j suffix. Help(int) Type casting Casting in python is done using constructor functions: – int() - constructs an integer number from an integer literal, a float literal, or a string literal. – float() - constructs a float number from an integer literal, a float literal or a string literal. – str() - constructs a string from a wide variety of data types, including strings, integer literals and float literals
Views: 8 CBTUniversity
Python Tutorial 2016 Lesson 1.2 - The range() Function
 
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Lesson 1.2 in the second version of the Python Tutorial Series continues evaluating for loops in Python. This time, we look at how the range() function can be used to control how many times a for loop executes and how the integers that range() returns can be used with index locations to fine tune iterations over string values. This is an introductory series of Python tutorials. This course, from start to finish, is designed to help someone who has never programmed before learn the basics of coding in Python. As this series continues, we examine more advanced Python techniques, functions, and methods. You can download a copy of Python from http://www.python.org/downloads/. Keep in mind this tutorial is using an older version of Python, v3.2.5. You will need to click on the "View Older Releases" button to use this specific version. Using the newer versions will not be an issue at this point, but when the lesson proceeds to basic graphics, the Pygame Module we'll use does not supports v3.2.5 only.