Why Pycharm doesn't find system Python libraries?

I am new in Python and I have this sample code to test some libraries (I’ve installed all needed libraries with pip).

import matplotlib.pyplot as plt
import numpy

myarray = numpy.array([1, 2, 3])
plt.plot(myarray)
plt.xlabel('some x axis')
plt.ylabel('some y axis')
plt.show()

when I run the code from command line (macOS) via command python main.py I get chart as expected. Bud when I run the same code in Pycharm I get an error related to missing libraries.

/Users/jirka/PycharmProjects/sandbox/venv/bin/python
/Users/jirka/PycharmProjects/sandbox/main.py Traceback (most recent
call last): File "/Users/jirka/PycharmProjects/sandbox/main.py",
line 2, in
import matplotlib.pyplot as plt ModuleNotFoundError: No module named ‘matplotlib’

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Process finished with exit code 1

Q: What I have to set in Pycharm to find installed system libraries?

Edit: I just add to the accepted answer that the Python interpreter can be in Pycharm set globally for all projects.

>Solution :

Try file -> Settings -> Project : xxxx -> Python Interpreter
Then change Python interpreter from venv to your local python.exe