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Make geometric tensors explicitly not iterable #91

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Make geometric tensors explicitly not iterable #91

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10 changes: 10 additions & 0 deletions escnn/nn/geometric_tensor.py
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Original file line number Diff line number Diff line change
Expand Up @@ -477,6 +477,16 @@ def to(self, *args, **kwargs):
tensor = self.tensor.to(*args, **kwargs)
return GeometricTensor(tensor, self.type, self.coords)

def __iter__(self):
# The purpose of this method is to prevent an infinite loop from
# occurring if a user accidentally tries to iterate over a geometric
# tensor. The infinite loop occurs because of the way `__getitem__()`
# is implemented [1].
#
# [1] https://stackoverflow.com/questions/926574/why-does-defining-getitem-on-a-class-make-it-iterable-in-python

raise TypeError(f"{self.__class__.__name__!r} object is not iterable")

def __getitem__(self, slices) -> 'GeometricTensor':
r'''

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