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I am trying to install the package using pip3, for example, the following command:

sudo pip3 install testresources setuptools==49.6.0

But, get the following error:

Traceback (most recent call last):
  File "/usr/bin/pip3", line 9, in <module>
    from pip import main
ValueError: source code string cannot contain null bytes

What I have tried:

Remove pip3 by purge and install it again by sudo apt-get install python3-pip

If it helps, the python version is 3.6.9.

Improve this question
6
  • Possible duplicate of: stackoverflow.com/questions/31233777/… Commented Apr 25, 2021 at 1:12
  • 3
    @TheBotlyNoob Definitely it is not duplicate! The post that you have mentioned is about a graphic library in MacOS, but mine is about the installation of any package with pip3 in ubuntu! Commented Apr 25, 2021 at 1:14
  • Does this still occur if you do a single-user installation? pip3 install --user testresources setuptools==49.6.0 Commented Apr 25, 2021 at 1:25
  • it seems the pip3 is corrupted. It is not clear if it's the shortcut /usr/bin/pip3 or the pip module itself. Can you try running sudo python3 -m pip install <same packages>? Commented Apr 25, 2021 at 2:23
  • @Marat this command gets the same error! Commented Apr 25, 2021 at 14:48
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