Error in CONDA installation Library:

conda install keras
Collecting package metadata (current_repodata.json): done
Solving environment: failed with initial frozen solve. Retrying with flexible solve.
Solving environment: failed with repodata from current_repodata.json, will retry with next repodata source.

Solution:

conda config --set channel_priority flexible

Then it’s running normally

conda install keras
Collecting package metadata (current_repodata.json): done
Solving environment: failed with initial frozen solve. Retrying with flexible solve.
Solving environment: failed with repodata from current_repodata.json, will retry with next repodata source.
Collecting package metadata (repodata.json): done
Solving environment: done

## Package Plan ##

  environment location: E:\Apps\Anaconda3

  added/updated specs:
    - keras


The following packages will be downloaded:

    package                    |            build
    ---------------------------|-----------------
    tensorflow-base-1.15.0     |mkl_py37h190a33d_0        36.2 MB
    ------------------------------------------------------------
                                           Total:        36.2 MB

The following NEW packages will be INSTALLED:

  keras              pkgs/main/win-64::keras-2.2.4-0
  keras-base         pkgs/main/win-64::keras-base-2.2.4-py37_0

The following packages will be DOWNGRADED:

  tensorflow                       2.0.0-mkl_py37he1bbcac_0 --> 1.15.0-mkl_py37h3789bd0_0
  tensorflow-base                  2.0.0-mkl_py37hd1d5974_0 --> 1.15.0-mkl_py37h190a33d_0
  tensorflow-estima~                     2.0.0-pyh2649769_0 --> 1.15.1-pyh2649769_0


Proceed ([y]/n)?y

After looking at the installation process, it seems that keras is based on tensorflow 1.5…

Then I gave up keras, refactored the code, and used the tensorflow.keras Instead of keras. Most of keras are in tensorflow.keras Have, some can’t directly correspond to their own online search on the line.