Loop

Juliano Luiz Faccioni

How to Loop Over Multiple Lists in Python

Learn how to loop over multiple lists side-by-side in Python – one element at a time. These techniques will work even if the lists have different lengths! Looping over lists is one of the most basic skills in Python. In some situations, you may find yourself having to loop over multiple lists side-by-side, taking one element from each list and performing an operation with it. If you’re new to Python, it is not always obvious how to do that or what caveats and best practices exist for this task.

Xavier Rigoulet

How to Decrement a Python for Loop

Do you know how to decrement in Python? It’s easy! You can do it with a simple for loop, and I’ll show you how. Unlike other programming languages (such as C++) Python has no decrement operator (i.e. similar to the -- in C++). In Python, we state the beginning and the end of the iteration with the number of steps in between. If you need a refresher on the Python for loop, read Kateryna's article on writing forloops in Python, then come back here.