Closed
Description
- Include a detailed description of the bug or suggestion
After upgrading to v3.7.3, all doctests started failing with the exception:
<my-pyenv>/lib/python3.7/site-packages/_pytest/doctest.py:206: TypeError: cannot unpack non-iterable NoneType object
Everything is OK with v3.7.2.
Slightly longer traceback (For the record, looking into the stacktrace, I see some references to "darwin"-specific functions):
___________________________________________________________________ [doctest] xxx ___________________________________________________________________
self = <CallInfo when='call' exception: cannot unpack non-iterable NoneType object>, func = <function call_runtest_hook.<locals>.<lambda> at 0x1112f49d8>, when = 'call'
treat_keyboard_interrupt_as_exception = False
def __init__(self, func, when, treat_keyboard_interrupt_as_exception=False):
#: context of invocation: one of "setup", "call",
#: "teardown", "memocollect"
self.when = when
self.start = time()
try:
> self.result = func()
<my-pyenv>/lib/python3.7/site-packages/_pytest/runner.py:201:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
> lambda: ihook(item=item, **kwds),
when=when,
treat_keyboard_interrupt_as_exception=item.config.getvalue("usepdb"),
)
<my-pyenv>/lib/python3.7/site-packages/_pytest/runner.py:183:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
self = <_HookCaller 'pytest_runtest_call'>, args = (), kwargs = {'item': <DoctestItem 'somemodule.somefunction'>}, notincall = set()
def __call__(self, *args, **kwargs):
if args:
raise TypeError("hook calling supports only keyword arguments")
assert not self.is_historic()
if self.argnames:
notincall = set(self.argnames) - set(['__multicall__']) - set(
kwargs.keys())
if notincall:
warnings.warn(
"Argument(s) {} which are declared in the hookspec "
"can not be found in this hook call"
.format(tuple(notincall)),
stacklevel=2,
)
> return self._hookexec(self, self._nonwrappers + self._wrappers, kwargs)
<my-pyenv>/lib/python3.7/site-packages/pluggy/hooks.py:258:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
self = <_pytest.config.PytestPluginManager object at 0x1034317b8>, hook = <_HookCaller 'pytest_runtest_call'>
methods = [<HookImpl plugin_name='runner', plugin=<module '_pytest.runner' from '<my-pyenv......t 0x103d4f4e0>>, <HookImpl plugin_name='logging-plugin', plugin=<_pytest.logging.LoggingPlugin object at 0x10e8f9860>>]
kwargs = {'item': <DoctestItem 'somemodule.somefunction'>}
def _hookexec(self, hook, methods, kwargs):
# called from all hookcaller instances.
# enable_tracing will set its own wrapping function at self._inner_hookexec
> return self._inner_hookexec(hook, methods, kwargs)
<my-pyenv>/lib/python3.7/site-packages/pluggy/manager.py:67:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
hook = <_HookCaller 'pytest_runtest_call'>
methods = [<HookImpl plugin_name='runner', plugin=<module '_pytest.runner' from '<my-pyenv......t 0x103d4f4e0>>, <HookImpl plugin_name='logging-plugin', plugin=<_pytest.logging.LoggingPlugin object at 0x10e8f9860>>]
kwargs = {'item': <DoctestItem 'somemodule.somefunction'>}
self._inner_hookexec = lambda hook, methods, kwargs: \
hook.multicall(
methods, kwargs,
> firstresult=hook.spec_opts.get('firstresult'),
)
<my-pyenv>/lib/python3.7/site-packages/pluggy/manager.py:61:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
hook_impls = [<HookImpl plugin_name='runner', plugin=<module '_pytest.runner' from '<my-pyenv......t 0x103d4f4e0>>, <HookImpl plugin_name='logging-plugin', plugin=<_pytest.logging.LoggingPlugin object at 0x10e8f9860>>]
caller_kwargs = {'item': <DoctestItem 'somemodule.somefunction'>}, firstresult = False
def _multicall(hook_impls, caller_kwargs, firstresult=False):
"""Execute a call into multiple python functions/methods and return the
result(s).
``caller_kwargs`` comes from _HookCaller.__call__().
"""
__tracebackhide__ = True
results = []
excinfo = None
try: # run impl and wrapper setup functions in a loop
teardowns = []
try:
for hook_impl in reversed(hook_impls):
try:
args = [caller_kwargs[argname] for argname in hook_impl.argnames]
except KeyError:
for argname in hook_impl.argnames:
if argname not in caller_kwargs:
raise HookCallError(
"hook call must provide argument %r" % (argname,))
if hook_impl.hookwrapper:
try:
gen = hook_impl.function(*args)
next(gen) # first yield
teardowns.append(gen)
except StopIteration:
_raise_wrapfail(gen, "did not yield")
else:
res = hook_impl.function(*args)
if res is not None:
results.append(res)
if firstresult: # halt further impl calls
break
except BaseException:
excinfo = sys.exc_info()
finally:
if firstresult: # first result hooks return a single value
outcome = _Result(results[0] if results else None, excinfo)
else:
outcome = _Result(results, excinfo)
# run all wrapper post-yield blocks
for gen in reversed(teardowns):
try:
gen.send(outcome)
_raise_wrapfail(gen, "has second yield")
except StopIteration:
pass
> return outcome.get_result()
<my-pyenv>/lib/python3.7/site-packages/pluggy/callers.py:201:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
self = <pluggy.callers._Result object at 0x11116efd0>
def get_result(self):
"""Get the result(s) for this hook call.
If the hook was marked as a ``firstresult`` only a single value
will be returned otherwise a list of results.
"""
__tracebackhide__ = True
if self._excinfo is None:
return self._result
else:
ex = self._excinfo
if _py3:
> raise ex[1].with_traceback(ex[2])
<my-pyenv>/lib/python3.7/site-packages/pluggy/callers.py:76:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
hook_impls = [<HookImpl plugin_name='runner', plugin=<module '_pytest.runner' from '<my-pyenv......t 0x103d4f4e0>>, <HookImpl plugin_name='logging-plugin', plugin=<_pytest.logging.LoggingPlugin object at 0x10e8f9860>>]
caller_kwargs = {'item': <DoctestItem 'somemodule.somefunction'>}, firstresult = False
def _multicall(hook_impls, caller_kwargs, firstresult=False):
"""Execute a call into multiple python functions/methods and return the
result(s).
``caller_kwargs`` comes from _HookCaller.__call__().
"""
__tracebackhide__ = True
results = []
excinfo = None
try: # run impl and wrapper setup functions in a loop
teardowns = []
try:
for hook_impl in reversed(hook_impls):
try:
args = [caller_kwargs[argname] for argname in hook_impl.argnames]
except KeyError:
for argname in hook_impl.argnames:
if argname not in caller_kwargs:
raise HookCallError(
"hook call must provide argument %r" % (argname,))
if hook_impl.hookwrapper:
try:
gen = hook_impl.function(*args)
next(gen) # first yield
teardowns.append(gen)
except StopIteration:
_raise_wrapfail(gen, "did not yield")
else:
> res = hook_impl.function(*args)
<my-pyenv>/lib/python3.7/site-packages/pluggy/callers.py:180:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
item = <DoctestItem 'somemodule.somefunction'>
def pytest_runtest_call(item):
_update_current_test_var(item, "call")
sys.last_type, sys.last_value, sys.last_traceback = (None, None, None)
try:
> item.runtest()
<my-pyenv>/lib/python3.7/site-packages/_pytest/runner.py:111:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
self = <DoctestItem 'somemodule.somefunction'>
def runtest(self):
_check_all_skipped(self.dtest)
> self._disable_output_capturing_for_darwin()
<my-pyenv>/lib/python3.7/site-packages/_pytest/doctest.py:192:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
self = <DoctestItem 'somemodule.somefunction'>
def _disable_output_capturing_for_darwin(self):
"""
Disable output capturing. Otherwise, stdout is lost to doctest (#985)
"""
if platform.system() != "Darwin":
return
capman = self.config.pluginmanager.getplugin("capturemanager")
if capman:
> out, err = capman.suspend_global_capture(in_=True)
E TypeError: cannot unpack non-iterable NoneType object
<my-pyenv>/lib/python3.7/site-packages/_pytest/doctest.py:206: TypeError
-
pip listof the virtual environment you are using
...
mypy 0.620
pytest 3.7.3
pytest-cov 2.5.1
pytest-django 3.4.2
tox 3.2.1
...
- pytest and operating system versions
pytest v3.7.3 and
$ sw_vers
ProductName: Mac OS X
ProductVersion: 10.13.6
BuildVersion: 17G65
- Minimal example if possible