Python is powerful — you can condense many algorithms into a single line of Python code. So the natural question arises: can you write a while loop in a single line of code? This article explores this mission-critical question in all detail. How to Write a While Loop in a Single Line of Python Code? … Read more
Problem: Given a collection. You want to create a new list based on all values in this collection. The code should run in a single line of code. How do you accomplish this? Do you need a lambda function? Example: Given an array a = [1, 2, 3, 4]. You need to create a second … Read more
This tutorial will teach you how to write one-line for loops in Python using the popular expert feature of list comprehension. After you’ve learned the basics of list comprehension, you’ll learn how to restrict list comprehensions so that you can write custom filters quickly and effectively. Are you ready? Let’s roll up your sleeves and … Read more
Python is powerful — you can condense many algorithms into a single line of Python code. So the natural question arises: can you write a for loop in a single line of code? This article explores this mission-critical question in all detail. How to Write a For Loop in a Single Line of Python Code? … Read more
Summary: The most Pythonic way to define a function in a single line is to (1) create an anonymous lambda function and (2) assign the function object to a variable name. You can then call the function by name just like any other regularly-defined function. For example, the statement f = lambda x: x+1 creates … Read more
What if you have a ternary operator that’s very long? Problem: How to write the ternary operator in multiple lines? Short Recap: Ternary Operator Ternary Operator: The most basic ternary operator x if c else y consists of three operands x, c, and y. It is an expression with a return value. The ternary operator … Read more
Problem: How to write the ternary operator in a lambda function? Example: Say, you’ve got the following example: The function f(x) takes one argument x and increases it by 10% if the argument is larger than 100. Otherwise, it increases it by 5%. In this article, you’ll learn how to convert this code snippet into … Read more
Do you want to learn Python but you’re overwhelmed and you don’t know where to start? Learn with Python cheat sheets! They compress the most important information in an easy-to-digest 1-page format. Here’s the new Python cheat sheet I just created—my goal was to make it the world’s most concise Python cheat sheet! ChrisWhile working … Read more
In this one-liner tutorial, you’ll learn about the popular sorting algorithm Quicksort. Surprisingly, a single line of Python code is all you need to write the Quicksort algorithm! Problem: Given a list of numerical values (integer or float). Sort the list in a single line of Python code using the popular Quicksort algorithm! Example: You … Read more
Problem: Given are two lists l1 and l2. You want to perform either of the following: 1. Boolean Comparison: Compare the lists element-wise and return True if your comparison metric returns True for all pairs of elements, and otherwise False. 2. Difference: Find the difference of elements in the first list but not in the … Read more
Short answer: The most Pythonic way to compute the difference between two lists l1 and l2 is the list comprehension statement [x for x in l1 if x not in set(l2)]. This works even if you have duplicate list entries, it maintains the original list ordering, and it’s efficient due to the constant runtime complexity … Read more
To check if two unordered lists x and y are identical, compare the converted sets with set(x) == set(y). However, this loses all information about duplicated elements. To consider duplicates, compare the sorted lists with sorted(x) == sorted(y). Due to the efficient merge-sort-like implementation of the sorted() function, this is quite fast for almost-sorted lists. … Read more