circuitpython/tests/basics/generator_throw.py

44 lines
813 B
Python

# case where generator doesn't intercept the thrown/injected exception
def gen():
yield 123
yield 456
g = gen()
print(next(g))
try:
g.throw(KeyError)
except KeyError:
print('got KeyError from downstream!')
# case where a thrown exception is caught and stops the generator
def gen():
try:
yield 1
yield 2
except:
pass
g = gen()
print(next(g))
try:
g.throw(ValueError)
except StopIteration:
print('got StopIteration')
# generator ignores a thrown GeneratorExit (this is allowed)
def gen():
try:
yield 123
except GeneratorExit:
print('GeneratorExit')
yield 456
# thrown a class
g = gen()
print(next(g))
print(g.throw(GeneratorExit))
# thrown an instance
g = gen()
print(next(g))
print(g.throw(GeneratorExit()))