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def gen1():
yield 1
yield 2
# Test that it's possible to close just created gen
g = gen1()
print(g.close())
try:
next(g)
except StopIteration:
print("StopIteration")
# Test that it's possible to close gen in progress
g = gen1()
print(next(g))
print(g.close())
try:
next(g)
print("No StopIteration")
except StopIteration:
print("StopIteration")
# Test that it's possible to close finished gen
g = gen1()
print(list(g))
print(g.close())
try:
next(g)
print("No StopIteration")
except StopIteration:
print("StopIteration")
# Throwing GeneratorExit in response to close() is ok
def gen2():
try:
yield 1
yield 2
except:
print('raising GeneratorExit')
raise GeneratorExit
g = gen2()
next(g)
print(g.close())
# Any other exception is propagated to the .close() caller
def gen3():
try:
yield 1
yield 2
except:
raise ValueError
g = gen3()
next(g)
try:
print(g.close())
except ValueError:
print("ValueError")
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