In many cases, it's easiest to express your iterator in the form of a function, known in the Python world as a "generator function". For example, you can create a generator function that returns the ...

from functools import lru_cache from math import sin @lru_cache def sin_half(x): return sin(x)/2 Now, every time you run the decorated function, lru_cache will check for a cached result for the ...

Improve your Python testing even more. In my last two articles, I introduced pytest, a library for testing Python code (see "Testing Your Code with Python's pytest" Part I and Part II). pytest has ...

Python 3.14 has a new feature called the template string, or t-string, type. A t-string superficially resembles an f-string, but it’s designed to do something very different.

Some functions are Boolean in nature, returning a “yes” or “no” answer, or, more appropriately, a non-zero or zero value, respectively. Procedures are simply special cases, functions that do not ...