Python List Comprehension Examples Explained

A Python list comprehension builds a new list in one line by writing [expression for item in iterable], with an optional if at the end to filter items. It replaces the "make an empty list, loop, append" pattern. Below are the list comprehension examples I actually use, from the basic form to filtering, if/else, nested loops and the mistakes that tripped me up. When I started learning Python, comprehensions looked like a puzzle. Once I learned to read them out loud, they became one of my favourite parts of the language.