dnnlib version issue

[QuinnFreedman]

When I run the google colab book I get the following error in cell 5.

It looks like it might be an error with library version numbers. I'm guessing dnnlib is expecting an earlier version of tensorflow?

---------------------------------------------------------------------------

AttributeError                            Traceback (most recent call last)

<ipython-input-5-3b1f65e34697> in <module>()
      4 import dnnlib
      5 from dnnlib import EasyDict
----> 6 import dnnlib.tflib as tflib
      7 from dnnlib.tflib import tfutil
      8 import tensorflow as tf

---------------------------------2 frames---------------------------------

/content/stylegan/dnnlib/tflib/__init__.py in <module>()
      6 # Creative Commons, PO Box 1866, Mountain View, CA 94042, USA.
      7 
----> 8 from . import autosummary
      9 from . import network
     10 from . import optimizer

/content/stylegan/dnnlib/tflib/autosummary.py in <module>()
     29 from tensorboard.plugins.custom_scalar import layout_pb2
     30 
---> 31 from . import tfutil
     32 from .tfutil import TfExpression
     33 from .tfutil import TfExpressionEx

/content/stylegan/dnnlib/tflib/tfutil.py in <module>()
     32 
     33 
---> 34 def shape_to_list(shape: Iterable[tf.Dimension]) -> List[Union[int, None]]:
     35     """Convert a Tensorflow shape to a list of ints."""
     36     return [dim.value for dim in shape]

AttributeError: module 'tensorflow' has no attribute 'Dimension'

[thomas-riccardi]

Pinning TensorFlow version 1.x solves this issue: add %tensorflow_version 1.x in a new cell at the begining (at least: before the import tensorflow)