Improve attribute missing error message. #20495
Description
When accessing a non-existent attribute on a script module, it gives the error below. It should instead say the attribute does not exist (which is different from it being None).
class A(torch.jit.ScriptModule):
def __init__(self):
super(A, self).__init__()
@torch.jit.script_method
def forward(self, x):
return x + self.whatisgoingon
class B(A):
def __init__(self):
super(B, self).__init__()
@torch.jit.script_method
def bar(self, x):
return x * x
A()
attribute 'whatisgoingon' of type 'NoneType' is not usable in a script method (did you forget to add it __constants__?):
@torch.jit.script_method
def forward(self, x):
return x + self.whatisgoingon
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