Value of type "TensorShape" is not indexable

[drasmuss]

Here is an example demonstrating the issue:

import tensor_annotations.tensorflow as ttf
import tensorflow as tf

x: ttf.Tensor1 = tf.zeros((10,))

print(x.shape[0])

This is valid code, but running a type checker (such as mypy) reports

tmp/tmp.py:6: error: Value of type "TensorShape" is not indexable

[mrahtz]

Thanks for the report! I'll push a fix on Monday or so.