Itertools

from itertools import combinations
from itertools import permutations

Install itertools

sudo pip3 install more-itertools

Itertools

from itertools import combinations_with_replacement

s, k = input().split()

for c in combinations_with_replacement(sorted(s), int(k)):
    print("".join(c))

Source: hackerrank.com

Itertools

for start, end in zip(start_points, end_points):
    if start[0] == -end[0] and start[1] == -end[1]:
        print(f"Point {start[0]},{start[1]} was negated.")

Source: treyhunner.com

Itertools

colors = ["red", "green", "blue", "purple"]
ratios = [0.2, 0.3, 0.1, 0.4]
for i, color in enumerate(colors):
    ratio = ratios[i]
    print("{}% {}".format(ratio * 100, color))

Source: treyhunner.com

Itertools

>>> head, middle, tail = numbers[0], numbers[1:-1], numbers[-1]
>>> head, *middle, tail = numbers

Source: treyhunner.com

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