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Reference library

Functions & basics

Small reusable building blocks — parameters, returns, and clear function design.

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Functions & basics medium

Return multiple values

Return a tuple of results and unpack them at the call site.

functions return tuple
Python 
def min_max(values):
    if not values:
        return None, None
    return min(values), max(values)


data = [3, 9, 1, 7]
lo, hi = min_max(data)
print(f"range: {lo} .. {hi}")
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Functions & basics — Python code examples

What you will find here

This page collects functions & basics snippets — short, copy-ready Python you can paste into our free online IDE and run without installing anything. Each sample includes a plain-English explanation and the full source code.

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Samples are quick reference — one concept per page. For step-by-step teaching, use our Python tutorials. To test yourself, try quizzes or coding challenges. Clean up style with the Python formatter.

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