How to Generate Combinations of Length n in Python?

Combinations of Length n

In programming, finding combinations is a common task. Combinations are sets of elements from a larger set that are chosen without repetition. For example, when choosing 3 numbers from the set [1, 2, 3, 4], the possible combinations are:

[1, 2, 3]
[1, 2, 4]
[1, 3, 4]
[2, 3, 4]

Using the itertools Module

The Python itertools module provides a convenient way to generate combinations. The following code demonstrates how to use it to get all combinations of length n from a list of numbers:

import itertools

for comb in itertools.combinations([1, 2, 3, 4], 3):
    print(comb)

This code outputs the expected result:

(1, 2, 3)
(1, 2, 4)
(1, 3, 4)
(2, 3, 4)

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