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Python - zip() Function

📌 What You Will Learn

zip() is useful when values at the same position belong together, such as names and scores.

Use zip(iterable1, iterable2, ...). Each result item is a tuple containing one value from each input.

🐍Code Cell

1	names = ['Asha', 'Ben', 'Chen']
2	scores = [85, 92, 78]
3
4	for name, score in zip(names, scores):
5	print(name, score)

Output

Asha 85
Ben 92
Chen 78

🐍Code Cell

1	pairs = list(zip(['a', 'b'], [1, 2]))
2	print(pairs)

Output

[('a', 1), ('b', 2)]

🐍Code Cell

1	fields = ['name', 'age']
2	values = ['Mira', 25]
3	profile = dict(zip(fields, values))
4	print(profile)

Output

{'name': 'Mira', 'age': 25}

Regular zip() stops at the shortest iterable, so extra values in longer inputs are ignored.

🐍Code Cell

1	print(list(zip([1, 2, 3], ['a', 'b'])))

Output

[(1, 'a'), (2, 'b')]

Use the unpacking operator with zip() to separate pairs back into columns.

🐍Code Cell

Output

('A', 'B')
(10, 20)

Import zip_longest() from itertools when every item from unequal-length inputs should be processed with a fill value.

📝 Key Takeaways

8 Questions

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