Enumerate with index

Loop with both index and value — cleaner than manual counters.

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loops enumerate lists

How it works

enumerate(iterable) yields (index, item) pairs starting at 0 by default.

Pass start=1 when you want human-friendly numbering in printed output.

Prefer enumerate over range(len(x)) — it is shorter and avoids index mistakes.

Python

tasks = ["read docs", "write code", "run tests"]

for i, task in enumerate(tasks, start=1):
    print(f"{i}. {task}")