Add python2 kernels to jupyter notebook:

(source: https://ipython.readthedocs.io/en/stable/install/kernel_install.html)

python2 -m pip install ipykernel
python2 -m ipykernel install --user
Add python3 kernels to jupyter notebook:
python3 -m pip install ipykernel
python3 -m ipykernel install --user
AttributeError: module ‘matplotlib.colors’ has no attribute ’to_rgba’

Update matplotlib

python3 -m pip install --upgrade matplotlib
Customized Datagenerator having AttributeError: ‘ProgbarLogger’ object has no attribute ‘log_values’

  • Check if the data generator could not load data correctly (0 sample)

    • If have len() function but returned 0.

    • len() is not required for object class, but is required for keras.utils.Sequence class.