I'm trying to install sumo using pip3 install --user sumo with Python@3.9 However although the sumo package is already installed, it cannot be invoked by which sumo, and same problem for which scipy & which numpy In the site-package folder I can find all these packages, so it is definitely properly installed by pip3 Edited: python3 -m site sys.path = [ '/Users/tonyspc', '/usr/local/lib/python3.9/site-packages', '/usr/local/Cellar/python@3.9/3.9.5/Frameworks/Python.framework/Versions/3.9/lib/python39.zip', '/usr/local/Cellar/python@3.9/3.9.5/Frameworks/Python.framework/Versions/3.9/lib/python3.9', '/usr/local/Cellar/python@3.9/3.9.5/Frameworks/Python.framework/Versions/3.9/lib/python3.9/lib-dynload', '/Users/tonyspc/Library/Python/3.9/lib/python/site-packages', '/usr/local/Cellar/sip/6.1.1/libexec/lib/python3.9/site-packages', '/usr/local/opt/python@3.9/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages', ] USER_BASE: '/Users/tonyspc/Library/Python/3.9' (exists) USER_SITE: '/Users/tonyspc/Library/Python/3.9/lib/python/site-packages' (exists) ENABLE_USER_SITE: True My current PATH for Python3 and pip3 is: which python3 /usr/local/opt/python@3.9/bin/python3 which pip3 /usr/local/opt/python@3.9/bin/pip3 I searched a little bit for solutions on the internet, none of them solved this issue. 1.I changed the environment variables for in the .bashrc and .bash_profile and sourced it export PATH="/usr/local/opt/python@3.9/bin:$PATH" export PYTHONPATH="/usr/local/lib/python3.9/site-packages/" 2.I changed file permission and attributes for site-packages folder sudo chmod -R 755 /usr/local/lib/python3.9/site-packages/ 3.I tried uninstall and reinstall Python@3.9 with Homebrew, still won't help 4.I tried uninstall and reinstall packages with pip3 install --user and Python3 -m pip install --user, still nothing changes. Can anyone tell me the solution for this? Continue reading...
