micropython/tests/basics/gen_yield_from_throw2.py

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# outer generator ignores a thrown GeneratorExit (this is allowed)
def gen():
try:
yield 123
except GeneratorExit:
print('GeneratorExit')
def gen2():
try:
yield from gen()
except GeneratorExit:
print('GeneratorExit outer')
yield 789
# thrown a class
g = gen2()
print(next(g))
print(g.throw(GeneratorExit))
# thrown an instance
g = gen2()
print(next(g))
print(g.throw(GeneratorExit()))