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I have recently come across to this error: 

~/Works/PolymerAnimation/PDF_try » python3 slope.py marco@MPB-2^Q5Ghz-16Gb
Traceback (most recent call last):
 File "slope.py", line 4, in <module>
 import numpy as np
ModuleNotFoundError: No module named 'numpy'
---------------------------------------------------------------------------------------------------------------------------------
~/Works/PolymerAnimation/PDF_try » pip3 install numpy marco@MPB-2^Q5Ghz-16Gb
Requirement already satisfied: numpy in /usr/local/lib/python3.7/site-packages (1.18.0)

I have a 2012 macbook pro and since today I never have problem using python, I have also installed numpy using homebrew (package manager for mac) ... I don't know what's going on! Numpy is not a unique module that is give me this problem ... but all the module .. like matplotlib and so on!

martineau
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asked Dec 29, 2019 at 18:35
3
  • 2
    Try python3 -m pip install numpy Commented Dec 29, 2019 at 18:37
  • what does python3 --version output? also are you sure pip3 is pointing to the python3 environment, it's possible it is not Commented Dec 29, 2019 at 18:37
  • thanks @IainShelvington it solve my problem !!! Commented Dec 29, 2019 at 18:45

1 Answer 1

1

Your python3 and pip3 are pointing to two different python versions. That's what caused the problem.

According to Iain's answer-

python3 -m pip install package_name

should solve the problem.

answered Dec 29, 2019 at 19:32
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