in testslide/patch.py [0:0]
def _is_instance_method(target: Any, method: str) -> bool:
if inspect.ismodule(target):
return False
klass = target if inspect.isclass(target) else type(target)
for k in klass.mro():
if method in k.__dict__:
value = k.__dict__[method]
if isinstance(value, _DescriptorProxy):
value = value.original_class_attr
if inspect.isfunction(value):
return True
return False