Why would py.importl​ib.import_​module('ke​ras') fail?

% Specify Python Executable Library.
pcPythonExe = 'C:\Users\dmattioli\AppData\Local\Programs\Python\Python37\python.exe';
[ver, exec, loaded]	= pyversion(pcPythonExe);

% Ensure python-matlab integration code is on matlab path.
pyFolder = fullfile(matlabroot, 'toolbox', 'matlab', 'external', 'interfaces', 'python');
addpath(pyFolder);
insert(py.sys.path, int64(0), pyFolder);

% Add relevant libaries' directory to python path.
otherpyFolder = 'C:\Users\dmattioli\.PyCharm2019.1\system\python_stubs\278535617';
insert(py.sys.path, int64(0), otherpyFolder)

>> pyversion

       version: '3.7'
    executable: 'C:\Users\dmattioli\AppData\Local\Programs\Python\Python37\python.exe'
       library: 'C:\Users\dmattioli\AppData\Local\Programs\Python\Python37\python37.dll'
          home: 'C:\Users\dmattioli\AppData\Local\Programs\Python\Python37'
      isloaded: 1

The error occurs in the following code (test3):

test0	= py.importlib.import_module('numpy') % Succeeds
test1	= py.importlib.import_module('matplotllib') % Succeeds
test2	= py.importlib.import_module('tensorflow') % Succeeds
test3	= py.importlib.import_module('keras') % Fails

>> test3	= py.importlib.import_module('keras')
Error using __init__><module> (line 88)
Python Error: AttributeError: 'NoneType' object has no attribute 'write'

Error in conv_utils><module> (line 9)
from .. import backend as K

Error in __init__><module> (line 6)
from . import conv_utils

Error in __init__><module> (line 3)
from . import utils

Error in <frozen importlib>_call_with_frames_removed (line 219)

Error in <frozen importlib>exec_module (line 728)

Error in <frozen importlib>_load_unlocked (line 677)

Error in <frozen importlib>_find_and_load_unlocked (line 967)

Error in <frozen importlib>_find_and_load (line 983)

Error in <frozen importlib>_gcd_import (line 1006)

Error in __init__>import_module (line 127)
    return _bootstrap._gcd_import(name[level:], package, level)

[Nitesh Kumar]

Hi, Were you able to solvce this issue? I am having similar issues.

[Dominik Mattioli]

No, unfortunately not. I believe it is/was an issue with the MATLAB version that I was using (2018a?), where MATLAB had not yet implemented a capability for the type of layers that I was trying to use. It may be fixed with the newer version (2020a).