how to solve combinations in python using import math code example

Example 1: python combinations function

def combinations(iterable, r):
    pool = tuple(iterable)
    n = len(pool)
    for indices in permutations(range(n), r):
        if sorted(indices) == list(indices):
            yield tuple(pool[i] for i in indices)

Example 2: how to find combinations in ppython with a variable

how to find python combinations with variable