Python One-Liners

How to Execute Multiple Lines in a Single Line Python From Command-Line?

Summary: To make a Python one-liner out of any multi-line Python script, replace the new lines with a new line character ‘\n’ and pass the result into the exec(…) function. You can run this script from the outside (command line, shell, terminal) by using the command python -c “exec(…)”. Problem: Given a multi-line code script …

How to Execute Multiple Lines in a Single Line Python From Command-Line? Read More »

Python One Line Exception Handling

Summary: You can accomplish one line exception handling with the exec() workaround by passing the one-linerized try/except block as a string into the function like this: exec(‘try:print(x)\nexcept:print(“Exception!”)’). This general method works for all custom, even multi-line, try and except blocks. However, you should avoid this one-liner code due to the bad readability. Surprisingly, there has …

Python One Line Exception Handling Read More »

Python One Line While Loop [A Simple Tutorial]

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? …

Python One Line While Loop [A Simple Tutorial] Read More »

Python

Python One Line For Loop With If

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 …

Python One Line For Loop With If Read More »

Python One Line For Loop [A Simple Tutorial]

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? …

Python One Line For Loop [A Simple Tutorial] Read More »

3 (Not So) Pythonic Ways to Define a Function in One Line [for Hackers]

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 …

3 (Not So) Pythonic Ways to Define a Function in One Line [for Hackers] Read More »