Error "SystemError: Negative size passed to PyUnicode_New"

[dei...@gmail.com]

Hello

I am a newbie.

I get the following error:
"SystemError: Negative size passed to PyUnicode_New"

when I run the following program:
https://github.com/keras-team/keras-io/blob/master/examples/generative/ddim.py

Please help.

Thanks.

[Lance Norskog]

Just tried it on Colab with tensorflow 2.8.2/keras 2.8.0 and that worked.

You have to do the code changes mentioned in the 'Training' block to get the new AdamW optimizer.

Just tried it on TF & Keras 2.9.0 and there are version skew problems.

Good luck,

Lance Norskog

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Lance Norskog
lance....@gmail.com
Redwood City, CA

[dei...@gmail.com]

I checked the *Training* block, but no success. What exactly should I be doing?

[Lance Norskog]

It uses the AdamW optimizer, which is in "experimental" for 2.8.2. You can just change it to 'adam':

optimizer='adam',

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