即使我安装了库，也无法导入 python 中的库

Question

I can't import libraries in python that I have installed using pip as shown here .

Even other libraries such as PySimpleGui and PyGame don't work when I try to import them.

I have tried uninstalling and reinstalling the libraries and I am sure they are installed on my computer.

Answer 1

To sort this out, you need to establish two things:

• where you (ie pip ) installed the packages, and
• where Python is looking for them

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You can find where pip installed a package with:

pip show PACKAGE # e.g. pip show flask

Obviously, if you install using pip3 install flask , you will need to use:

pip3 show flask

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Now you need to see which Python you are running and where it is looking for its packages:

import sys

print(sys.executable) # show which Python we are running
print(sys.path)       # show where it is looking for packages

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Hopefully you will see you are not installing into the Python interpreter you are using.

Answer 2

I think you might have installed them under a different folder or space than what you need. For example the code below installs the library at your current space, while simply pip3 install pygame might be somewhere else.

python3 -m pip3 install pygame

Answer 3

I seem to have fixed the problem, i was using a different interpreter as to which my packages were installed in as pointed out by Mohammad Jafari.

Thanks for all your help