Question 37770 in Ubuntu Question posted in
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Having trouble installing numpy on Ubuntu 18.04

At first, I was trying to install evo (a package for SLAM research) from source and I encountered an error:
ModuleNotFoundError: No module named ‘numpy’

So then I tried to install numpy using pip install numpy. However I encountered another error:
SystemError: Cannot compile ‘Python.h’. Perhaps you need to install python-dev|python-devel.

Finally, I tried to install python-dev using sudo apt-get install python-dev, and I found out it has been installed already. So I don’t know where the problem is.

My default python version is 3.8.16

Could anyone help me with this issue?

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2

Answers


  1. 0

    maybe conda could install it?

    conda install -c anaconda numpy

    it isn’t generally ideal to mix conda and pip, but it should still install numpy successfully.

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  2. 0

    Run pip3 install --upgrade pip and try again.

    If it doesn’t work, try sudo apt-get install pypy-dev instead of python-dev.

    You can also try sudo apt-get install python3-numpy

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