Invalid Python SDK Error while using python 3.4 on

问题:

When I switch my PyCharm to use Python 3.4.3 I am getting the error:

Invalid Python SDK

Also PyCharm does not automatically find the Python 3.4 interpreter for me, even though it is on desired path /Library/Frameworks/Python.framework/Versions/3.4/bin/python3.4.

See screenshot:

Although the interpreter does work. I am able to get correct output as expected, but code completion related to python 3.4 is not working.

e.g. print("hello world!) still shows an error on the editor, but the console shows the correct output.

回答1:

I had the same issue. Try to comment/remove the PYTHONPATH variable in your ~/.bash_profile

#export PYTHONPATH=/usr/local/lib/python2.7/site-packages/

If it does not help it also may be useful to look in the idea.log for the errors:

/Users/username/Library/Logs/PyCharm40/idea.log

I had the following errors:

Your PYTHONPATH points to a site-packages dir for Python 2.x but you are running Python 3.x!
     PYTHONPATH is currently: "/usr/local/lib/python2.7/site-packages/"
     You should `unset PYTHONPATH` to fix this.

回答2:

This also happened to me. I renamed a repository and then my virtual environment got stuck in the old path.

I grepped all configuration files and could not find any reference to the old one.

What finally solved the problem was to clear caches with the option File > Invalidate Caches / Restart...:

回答3:

I go the same error message in Windows version of PyCharm after I re-installed Python (3.5) on a different location. The problem was that most of my existing virtual environments registered in PyCharm were still referencing the old installation of Python.

I resolved it by deleting these existing virtual environments and creating a new one. If deleting existing interpreters (in virtual environment) is not an option, you should be able to modify them instead in File | Settings | Project Interpreter