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bpo-34890: Make iscoroutinefunction, isgeneratorfunction and isasyncgenfunction work with functools.partial (GH-9903)

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inspect.isfunction() processes both inspect.isfunction(func) and
inspect.isfunction(partial(func, arg)) correctly but some other functions in the
inspect module (iscoroutinefunction, isgeneratorfunction and isasyncgenfunction)
lack this functionality. This commits adds a new check in the mentioned functions
in the inspect module so they can work correctly with arbitrarily nested partial
functions.
This commit is contained in:
Pablo Galindo 2018-10-26 12:19:14 +01:00 • committed by GitHub
parent e483f02423
commit 7cd2543416
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GPG key ID: 4AEE18F83AFDEB23
6 changed files with 61 additions and 12 deletions
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27
Lib/test/test_inspect.py
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@ -166,26 +166,51 @@ class TestPredicates(IsTestBase):
self.assertFalse(inspect.ismemberdescriptor(datetime.timedelta.days))
def test_iscoroutine(self):
async_gen_coro = async_generator_function_example(1)
gen_coro = gen_coroutine_function_example(1)
coro = coroutine_function_example(1)
self.assertFalse(
inspect.iscoroutinefunction(gen_coroutine_function_example))
self.assertFalse(
inspect.iscoroutinefunction(
functools.partial(functools.partial(
gen_coroutine_function_example))))
self.assertFalse(inspect.iscoroutine(gen_coro))
self.assertTrue(
inspect.isgeneratorfunction(gen_coroutine_function_example))
self.assertTrue(
inspect.isgeneratorfunction(
functools.partial(functools.partial(
gen_coroutine_function_example))))
self.assertTrue(inspect.isgenerator(gen_coro))
self.assertTrue(
inspect.iscoroutinefunction(coroutine_function_example))
self.assertTrue(
inspect.iscoroutinefunction(
functools.partial(functools.partial(
coroutine_function_example))))
self.assertTrue(inspect.iscoroutine(coro))
self.assertFalse(
inspect.isgeneratorfunction(coroutine_function_example))
self.assertFalse(
inspect.isgeneratorfunction(
functools.partial(functools.partial(
coroutine_function_example))))
self.assertFalse(inspect.isgenerator(coro))
coro.close(); gen_coro.close() # silence warnings
self.assertTrue(
inspect.isasyncgenfunction(async_generator_function_example))
self.assertTrue(
inspect.isasyncgenfunction(
functools.partial(functools.partial(
async_generator_function_example))))
self.assertTrue(inspect.isasyncgen(async_gen_coro))
coro.close(); gen_coro.close(); # silence warnings
def test_isawaitable(self):
def gen(): yield