Python · Iterators, modules and the standard library

enumerate + zip

Combine tools instead of indexing manually.

pythonRunnable example python course

Syntax

for i, (a, b) in enumerate(zip(xs, ys)):

Example

Open in the lab

names = ["a", "b"]
scores = [90, 85]
for index, (name, score) in enumerate(zip(names, scores), start=1):
    print(index, name, score)

Reference pages are the quick answer. The course explains the why, shows the full example and ends with a challenge.