Matlab 2019a pyenv.Library empty when using Python 2.7

I am using Ubuntu 20.04, with bothh Python 2.7 and Python 3.8 installed. When I try to load Python 2.7 in matlab, by doing pyenv('Version','python2.7'), I get:

pyenv('Version','python2.7')

ans = 

  PythonEnvironment with properties:

          Version: "2.7"
       Executable: "/usr/bin/python2.7"
          Library: ""
             Home: "/usr"
           Status: NotLoaded
    ExecutionMode: OutOfProcess

And calling any py function will not work, as it does not find the library.

pyenv works with Python 3.8:

pyenv('Version','python3.8')

ans = 

  PythonEnvironment with properties:

          Version: "3.8"
       Executable: "/usr/bin/python3.8"
          Library: "libpython3.8.so.1.0"
             Home: "/usr"
           Status: NotLoaded
    ExecutionMode: OutOfProcess. 

I require Python 2.7. Any hep would be appreciated.

[Sven]

did you manage to solve this?

I am having the exact reverse problem, able to run python2.7 and not being able to run python3.8. For me the library remains empty in python3.8 and shows libpython2.7.so.1.0 in v2.7

edit: solved using sudo apt-get install python3.8-dev

[Simon Geoffroy-Gagnon]

Interesting. I ended up just going through Python first and using the Matlab library in python and it worked for my purposes. I have not tried using the python 2.7-dev though, but that would likely work! Thank you.

Answer 1

[Sven]

I managed to solve my problem using sudo apt-get install python3.8-dev. Maybe you can solve the 2.7 case in the same manner using:

sudo apt-get install python2.7-dev