diff options
Diffstat (limited to 'Lib/inspect.py')
| -rw-r--r-- | Lib/inspect.py | 23 |
1 files changed, 12 insertions, 11 deletions
diff --git a/Lib/inspect.py b/Lib/inspect.py index 15eefdb..a550202 100644 --- a/Lib/inspect.py +++ b/Lib/inspect.py @@ -2581,17 +2581,18 @@ def _signature_from_callable(obj, *, factory_method = None new = _signature_get_user_defined_method(obj, '__new__') init = _signature_get_user_defined_method(obj, '__init__') - # Now we check if the 'obj' class has an own '__new__' method - if '__new__' in obj.__dict__: - factory_method = new - # or an own '__init__' method - elif '__init__' in obj.__dict__: - factory_method = init - # If not, we take inherited '__new__' or '__init__', if present - elif new is not None: - factory_method = new - elif init is not None: - factory_method = init + + # Go through the MRO and see if any class has user-defined + # pure Python __new__ or __init__ method + for base in obj.__mro__: + # Now we check if the 'obj' class has an own '__new__' method + if new is not None and '__new__' in base.__dict__: + factory_method = new + break + # or an own '__init__' method + elif init is not None and '__init__' in base.__dict__: + factory_method = init + break if factory_method is not None: sig = _get_signature_of(factory_method) |