Python engine error "Invalid Version"

Dear, I am trying to install the Python engine in MATLAB 2020b using python 3.8.20.

According to the compatibility table, it should be possible, however, I get this error. Could you please help?

(py38) C:\Program Files\MATLAB\R2020b\extern\engines\python>python setup.py install
Traceback (most recent call last):
  File "setup.py", line 78, in <module>
    setup(
  File "C:\ProgramData\anaconda3\envs\py38\lib\site-packages\setuptools\_distutils\core.py", line 145, in setup
    _setup_distribution = dist = klass(attrs)
  File "C:\ProgramData\anaconda3\envs\py38\lib\site-packages\setuptools\dist.py", line 337, in __init__
    self.metadata.version = self._normalize_version(self.metadata.version)
  File "C:\ProgramData\anaconda3\envs\py38\lib\site-packages\setuptools\dist.py", line 373, in _normalize_version
    normalized = str(Version(version))
  File "C:\ProgramData\anaconda3\envs\py38\lib\site-packages\packaging\version.py", line 202, in __init__
    raise InvalidVersion(f"Invalid version: {version!r}")
packaging.version.InvalidVersion: Invalid version: 'R2020b'

Answer 1

[SACHIN KHANDELWAL]

Hi @Ricardo,

I came across some MATLAB answer articles that address a similar issue. I recommend checking out the workaround mentioned in these articles to see if it resolves your problem.

https://www.mathworks.com/matlabcentral/answers/1998578-invalid-version-r2021-when-installing-for-python-3-7-3-9

https://www.mathworks.com/matlabcentral/answers/1982279-python-api-cannot-be-built-with-setup-py-in-r2021a