Change with steps

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examples/lists/change_steps.py

numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]
print(numbers)  # [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]

print(numbers[1::2])   # [2, 4, 6, 8, 10, 12]
numbers[1::2] = [0, 0, 0, 0, 0, 0]
print(numbers)  # [1, 0, 3, 0, 5, 0, 7, 0, 9, 0, 11, 0]

numbers[1::2] = [42] * 6
print(numbers)  # [1, 42, 3, 42, 5, 42, 7, 42, 9, 42, 11, 42]