To sort and return a Python list in a single line of code, use the sorted(list) method that returns a new list of sorted elements. It copies only the references to the original elements so the returned list is not a deep but a shallow copy. Let’s dive into the challenge to learn about more … Read more
Summary: To read inputs from a user and convert it to an integer, use the command int(input(‘Prompt’)) for Python 3 and input(‘Prompt’) for Python 2. To convert the user input to a float value, use float(input(‘Prompt’)). As a programmer, user input is one of the major components of your program if you want to make … Read more
Problem: Given two variables a and b. Use a single line of Python code to swap the variables to assign the value of a to b and the value of b to a. Example: Say, you have to integers a=21 and b=42. You want to swap the variables so that a=42 and b=21. How to … Read more
Problem: How to perform one-line if conditional assignments in Python? Example: Say, you start with the following code. You want to set the value of x to 42 if boo is True, and do nothing otherwise. Let’s dive into the different ways to accomplish this in Python. We start with an overview: Exercise: Run the … Read more
To create a variable number of variables in Python, either use a dictionary or a namedtuple. Problem: How can you store variable number of variables in your Python code? Example: Consider that there is a requirement wherein you have to store the specifications of a product in a single variable which includes a variable … Read more
Summary: To accept valid inputs from the user either use a While Loop With Custom Validations or use the PyInputPlus module to avoid tedious validation definitions. You can also use recursion to prompt the user for entering the valid input. Overview Problem: Given a user input; accept the input only if it is valid otherwise … Read more
Do you want to one-linerize the append() method in Python? I feel you—writing short and concise one-liners can be an addiction! 🙂 This article will teach you all the ways to append one or more elements to a list in a single line of Python code! Python List Append Let’s quickly recap the append method … Read more
This article answers a number of questions how to accomplish different things with a Python array in one line. By studying these questions, you’ll become a better coder. So, let’s roll up your sleeves and get started! 🙂 Python One Line Print Array If you just want to know the best way to print an … Read more
This interesting code snippet was brought to my attention by Finxter reader Albrecht. You’d guess that the for loop goes from i=250 to i=259, each time incrementing a and b. As Python creates one integer object to which both names refer, the command a is not b should always be False. Thus, the result is … Read more
URL encoding “is a method to encode information in a Uniform Resource Identifier (URI)”. It is also called Percent-encoding because percentage symbols are used to encode certain reserved characters: ! # $ % & ‘ ( ) * + , / : ; = ? @ [ ] %21 %23 %24 %25 %26 %27 %28 … Read more
Python has several built-in data structures such as Lists, Sets and Dictionaries (check out the articles!).In this article, you’ll learn everything you need to know about tuples including real world examples. Tuple Motivating Example Did you ever have a function from which you wanted to return several values? Say, you’ve got a function translate(text, target_language) … Read more
To break one line into multiple lines in Python, use an opening parenthesis in the line you want to break. Now, Python expects the closing parenthesis in one of the next lines and the expression is evaluated across line boundaries. As an alternative, you can also use the backslash \ just in front of the … Read more