Break em Python: quando interromper um laço

Para interromper um laço imediatamente em Python, use break.

for i in range(1, 100+1, 1):
    print("Searching shelf ", i)
    if i == 3:
        print("Cookie found! Going to checkout.")
        break  # Breaks the loop and jumps to the end of it

print("End of shopping.")

while True:
    print("Enter even numbers (odd ends the system): ", end="")
    num = int(input())

    if num % 2 != 0:
        print("Violation error! Stopping immediately.")
        break

    print("Accepted number: ", num)
    if False:
        break