Working with files in Python is pretty easy. But there’s a common mistake that can sneak into your code. Not closing the file ...

Sorting a list in Python is simple, and you have two options: In-place: Modifies the list. Out-of-place: Returns a new list and doesn't modify the original list. The sort method is in-place, and it ...

For some time now, Python developers have been able to “annotate” names with type information. With Python 3.5, type hints officially became part of the language (see PEP 484).

Matching against variables with Python structural pattern matching An important note is worth bringing up here. If you list variable names in a case statement, that doesn’t mean a match should ...

The behavior of locals has also changed in Python 3.13. It now returns an independent snapshot of the local variables and values without affecting any future calls within the same scope.