Question: I have a problem when I run a .py file on a Macbook Air M1: [Running] python3 -u "/Users/kaiyuwei/Documents/graduation project/metaheuristics/run_CRO.py" Traceback (most recent call last): File "/Users/kaiyuwei/Library/Python/3.8/lib/python/site-packages/numpy/core/__init__.py", line 23, in <module> from . import multiarray File "/Users/kaiyuwei/Library/Python/3.8/lib/python/site-packages/numpy/core/multiarray.py", line 10, in <module> from . import overrides File "/Users/kaiyuwei/Library/Python/3.8/lib/python/site-packages/numpy/core/overrides.py", line 6, in <module> from numpy.core._multiarray_umath import ( ImportError: dlopen(/Users/kaiyuwei/Library/Python/3.8/lib/python/site-packages/numpy/core/_multiarray_umath.cpython-38-darwin.so, 0x0002): tried: '/Users/kaiyuwei/Library/Python/3.8/lib/python/site-packages/numpy/core/_multiarray_umath.cpython-38-darwin.so' (mach-o file, but is an incompatible architecture (have 'arm64', need 'x86_64')) During handling of the above exception, another exception occurred: Traceback (most recent call last): File "/Users/kaiyuwei/Documents/graduation project/metaheuristics/run_CRO.py", line 1, in <module> from models.multiple_solution.evolutionary_based.CRO import BaseCRO File "/Users/kaiyuwei/Documents/graduation project/metaheuristics/models/multiple_solution/evolutionary_based/CRO.py", line 1, in <module> import numpy as np File "/Users/kaiyuwei/Library/Python/3.8/lib/python/site-packages/numpy/__init__.py", line 140, in <module> from . import core File "/Users/kaiyuwei/Library/Python/3.8/lib/python/site-packages/numpy/core/__init__.py", line 49, in <module> raise ImportError(msg) ImportError: IMPORTANT: PLEASE READ THIS FOR ADVICE ON HOW TO SOLVE THIS ISSUE! Importing the numpy C-extensions failed. This error can happen for many reasons, often due to issues with your setup or how NumPy was installed. We have compiled some common reasons and troubleshooting tips at: https://numpy.org/devdocs/user/troubleshooting-importerror.html Please note and check the following: * The Python version is: Python3.8 from "/Library/Developer/CommandLineTools/usr/bin/python3" * The NumPy version is: "1.23.1" and make sure that they are the versions you expect. Please carefully study the documentation linked above for further help. Original error was: dlopen(/Users/kaiyuwei/Library/Python/3.8/lib/python/site-packages/numpy/core/_multiarray_umath.cpython-38-darwin.so, 0x0002): tried: '/Users/kaiyuwei/Library/Python/3.8/lib/python/site-packages/numpy/core/_multiarray_umath.cpython-38-darwin.so' (mach-o file, but is an incompatible architecture (have 'arm64', need 'x86_64')) [Done] exited with code=1 in 0.055 seconds  I think the reason is that I'm using the numpy package for 'x86_64', so I tried to use pip install numpy --upgrade to upgrade numpy, but I got output like: Requirement already satisfied: numpy in /Users/kaiyuwei/Library/Python/3.8/lib/python/site-packages (1.23.1)  I also tried python3 -m pip install --upgrade pip to upgrade python, but still; Requirement already satisfied: pip in /Users/kaiyuwei/Library/Python/3.8/lib/python/site-packages (22.1.2)  Can anyone help me?

Answer: I solved the problem by simply uninstalling numpy package: pip3 uninstall numpy  and reinstalling it: pip3 install numpy