break — Expert Examples

Exits the nearest enclosing for or while loop immediately

EasyIntermediateAdvancedExpert

Break bytecode

How break compiles to bytecode instructions.

python
import dis

def with_break():
    for i in range(10):
        if i == 5:
            break

def with_else():
    for i in range(10):
        if i == 5:
            break
    else:
        print("completed")

print("Loop with break:")
dis.dis(with_break)
print("\nLoop with break + else:")
dis.dis(with_else)

break compiles to JUMP_ABSOLUTE past the loop. When else is present, break jumps over the else block, while normal loop completion falls through to it.

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