Chris Jerdonek added the comment:
Good suggestion, David. Here is such sample test code. It is adapted from the
sample code for "ValueError: generator already executing" included in PEP 255:
def test_gen(call_gen_method):
def gen():
call_gen_method(me)
yield 1
me = gen()
try:
me.__next__()
except Exception as e:
print(repr(e))
test_gen(lambda g: g.__next__())
test_gen(lambda g: g.send(1))
test_gen(lambda g: g.throw(OSError))
test_gen(lambda g: g.close())
This outputs:
ValueError('generator already executing',)
ValueError('generator already executing',)
ValueError('generator already executing',)
ValueError('generator already executing',)
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