Bdtyktl

I installed python3 and pip3 successfully on my Ubuntu16.04, but pip3 install is broken. How can I fix this problem? The error information of pip3 install is as follows:

# pip3 install xlwt

Traceback (most recent call last):

File "/usr/bin/pip3", line 9, in <module>

  from pip import main

File "/usr/lib/python3/dist-packages/pip/__init__.py", line 21, in <module>

  from pip._vendor.requests.packages.urllib3.exceptions import DependencyWarning

ModuleNotFoundError: No module named 'pip._vendor.requests'

Output of sudo -H pip3 install --upgrade pip

sudo -H pip3 install --upgrade pip  

Traceback (most recent call last):

File "/usr/bin/pip3", line 9, in <module>

  from pip import main

File "/usr/lib/python3/dist-packages/pip/__init__.py", line 21, in <module>

  from pip._vendor.requests.packages.urllib3.exceptions import DependencyWarning

ModuleNotFoundError: No module named 'pip._vendor.requests'

Output of which pip3 and pip3 --version:

# which pip3

/usr/bin/pip3



# pip3 --version

Traceback (most recent call last):

  File "/usr/bin/pip3", line 9, in <module>

    from pip import main

  File "/usr/lib/python3/dist-packages/pip/__init__.py", line 21, in <module>

    from pip._vendor.requests.packages.urllib3.exceptions import DependencyWarning

ModuleNotFoundError: No module named 'pip._vendor.requests'

P.S. Python2 pip runs successfully. Output of "which pip" and "pip --version":

# which pip

/usr/bin/pip



# pip --version

pip 1.5.4 from /usr/local/lib/python2.7/dist-packages/pip-1.5.4-py2.7.egg (python 2.7)

And python and python3 installation information:

# which python

/usr/bin/python

# which python3

/usr/bin/python3



# python -V

Python 2.7.14

# python3 -V

Python 3.6.3  

There is something wrong with your pip3 so remove it and reinstall it. Open the terminal and type:

sudo apt purge python3-pip  

sudo rm -rf '/usr/lib/python3/dist-packages/pip'  

sudo apt install python3-pip   

cd

cd .local/lib/python3/site-packages

sudo rm -rf pip*  

cd

cd .local/lib/python3.5/site-packages

sudo rm -rf pip*  

sudo pip3 install xlwt

This is what I've found helpful:

1. sudo rm -rf /usr/local/lib/python3.5/dist-packages


2. Never run pip3 within sudo.

Installing python3-pip package create a python script in file /usr/bin/pip3. In order to run, main() function need to be imported from module pip (from pip import main).
This method path is only available for packaged pip version (9.0.1 in my case).

After running pip3 install --upgrade pip, pip version become 18.1, and main() has been moved in pip._internal.

Use the command python3 -m pip --version to see if your case correspond to the same situation (pip3 is also available with this method when /usr/bin/pip3 is broken).

If so, in file /usr/bin/pip3, replace line 9:
from pip import main
with:
from pip._internal import main

The issue will be fixed.
(Tested on Ubuntu 18.04 distribution)

Had same issue, installing openssl fixed it for me