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Description
Bug report
This code seems to cause infinite recursion in unittest.mock.seal:
from unittest import mock
class Foo:
pass
class Bar:
foo = Foo
Foo.bar = Bar
foo = mock.create_autospec(Foo)
mock.seal(foo)$ python3 foo.py
Traceback (most recent call last):
File "/tmp/tmp.yKOznvlUIG/foo.py", line 8, in <module>
mock.seal(foo)
File "/usr/lib/python3.9/unittest/mock.py", line 2874, in seal
seal(m)
File "/usr/lib/python3.9/unittest/mock.py", line 2874, in seal
seal(m)
File "/usr/lib/python3.9/unittest/mock.py", line 2874, in seal
seal(m)
[Previous line repeated 973 more times]
File "/usr/lib/python3.9/unittest/mock.py", line 2866, in seal
m = getattr(mock, attr)
File "/usr/lib/python3.9/unittest/mock.py", line 655, in __getattr__
result = create_autospec(
File "/usr/lib/python3.9/unittest/mock.py", line 2627, in create_autospec
mock = Klass(parent=_parent, _new_parent=_parent, _new_name=_new_name,
File "/usr/lib/python3.9/unittest/mock.py", line 2034, in __init__
_safe_super(MagicMixin, self).__init__(*args, **kw)
File "/usr/lib/python3.9/unittest/mock.py", line 1074, in __init__
_safe_super(CallableMixin, self).__init__(
File "/usr/lib/python3.9/unittest/mock.py", line 437, in __init__
self._mock_add_spec(spec, spec_set, _spec_as_instance, _eat_self)
File "/usr/lib/python3.9/unittest/mock.py", line 500, in _mock_add_spec
res = _get_signature_object(spec,
File "/usr/lib/python3.9/unittest/mock.py", line 107, in _get_signature_object
return func, inspect.signature(sig_func)
File "/usr/lib/python3.9/inspect.py", line 3113, in signature
return Signature.from_callable(obj, follow_wrapped=follow_wrapped)
File "/usr/lib/python3.9/inspect.py", line 2862, in from_callable
return _signature_from_callable(obj, sigcls=cls,
File "/usr/lib/python3.9/inspect.py", line 2333, in _signature_from_callable
wrapped_sig = _get_signature_of(obj.func)
File "/usr/lib/python3.9/inspect.py", line 2329, in _signature_from_callable
return _signature_from_builtin(sigcls, obj,
File "/usr/lib/python3.9/inspect.py", line 2149, in _signature_from_builtin
return _signature_fromstr(cls, func, s, skip_bound_arg)
File "/usr/lib/python3.9/inspect.py", line 2009, in _signature_fromstr
_signature_strip_non_python_syntax(s)
File "/usr/lib/python3.9/inspect.py", line 1962, in _signature_strip_non_python_syntax
for t in token_stream:
File "/usr/lib/python3.9/tokenize.py", line 525, in _tokenize
pseudomatch = _compile(PseudoToken).match(line, pos)
File "/usr/lib/python3.9/tokenize.py", line 99, in _compile
return re.compile(expr, re.UNICODE)
File "/usr/lib/python3.9/re.py", line 252, in compile
return _compile(pattern, flags)
File "/usr/lib/python3.9/re.py", line 292, in _compile
flags = flags.value
File "/usr/lib/python3.9/types.py", line 178, in __get__
return self.fget(instance)
RecursionError: maximum recursion depth exceeded
Your environment
- CPython versions tested on: 3.9.9
- Operating system and architecture: Debian testing, amd64
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