python3-pip installed but pip3 command not found?

Question

I am testing a Python3 program in several computers. To do that, I need to install a library of Python with pip3.

So first, I was installing python3-pip in each computer (everyone is running Kubuntu OS). Everything was OK, and then I installed the package I needed with pip3, and I managed to do that except for one computer.

In that computer, python3-pip was apparently installed succesfully, but when I look for the package, I get this error (the translation is homemade):

Command «pip3» was not found, maybe you wanted to say:
 The command «pip» from the package «python-pip» (universe)
pip3: command not found

EDIT

Results of dpkg -L python3-pip:

/.
/usr
/usr/share
/usr/share/man
/usr/share/man/man1
/usr/share/man/man1/pip-3.2.1.gz
/usr/share/doc
/usr/share/doc/python3-pip
/usr/share/doc/python3-pip/changelog.Debian.gz
/usr/share/doc/python3-pip/copyright
/usr/bin
/usr/bin/pip-3.2
/usr/lib
/usr/lib/python3
/usr/lib/python3/dist-packages
/usr/lib/python3/dist-packages/pip
/usr/lib/python3/dist-packages/pip/log.py
/usr/lib/python3/dist-packages/pip/commands
/usr/lib/python3/dist-packages/pip/commands/unzip.py
/usr/lib/python3/dist-packages/pip/commands/zip.py
/usr/lib/python3/dist-packages/pip/commands/install.py
/usr/lib/python3/dist-packages/pip/commands/completion.py
/usr/lib/python3/dist-packages/pip/commands/uninstall.py
/usr/lib/python3/dist-packages/pip/commands/search.py
/usr/lib/python3/dist-packages/pip/commands/freeze.py
/usr/lib/python3/dist-packages/pip/commands/__init__.py
/usr/lib/python3/dist-packages/pip/commands/help.py
/usr/lib/python3/dist-packages/pip/commands/bundle.py
/usr/lib/python3/dist-packages/pip/_pkgutil.py
/usr/lib/python3/dist-packages/pip/util.py
/usr/lib/python3/dist-packages/pip/status_codes.py
/usr/lib/python3/dist-packages/pip/vcs
/usr/lib/python3/dist-packages/pip/vcs/__init__.py
/usr/lib/python3/dist-packages/pip/vcs/mercurial.py
/usr/lib/python3/dist-packages/pip/vcs/git.py
/usr/lib/python3/dist-packages/pip/vcs/bazaar.py
/usr/lib/python3/dist-packages/pip/vcs/subversion.py
/usr/lib/python3/dist-packages/pip/baseparser.py
/usr/lib/python3/dist-packages/pip/exceptions.py
/usr/lib/python3/dist-packages/pip/index.py
/usr/lib/python3/dist-packages/pip/basecommand.py
/usr/lib/python3/dist-packages/pip/req.py
/usr/lib/python3/dist-packages/pip/locations.py
/usr/lib/python3/dist-packages/pip/__init__.py
/usr/lib/python3/dist-packages/pip/runner.py
/usr/lib/python3/dist-packages/pip/backwardcompat.py
/usr/lib/python3/dist-packages/pip/download.py
/usr/lib/python3/dist-packages/pip-1.1.egg-info
/usr/lib/python3/dist-packages/pip-1.1.egg-info/SOURCES.txt
/usr/lib/python3/dist-packages/pip-1.1.egg-info/not-zip-safe
/usr/lib/python3/dist-packages/pip-1.1.egg-info/top_level.txt
/usr/lib/python3/dist-packages/pip-1.1.egg-info/PKG-INFO
/usr/lib/python3/dist-packages/pip-1.1.egg-info/entry_points.txt
/usr/lib/python3/dist-packages/pip-1.1.egg-info/dependency_links.txt

Answer 1

One of three things will likely fix it:

1. In case python3-pip did not install correctly, re-install it:

   This is used for Debian-based distros like Ubuntu, Mint:

   sudo apt-get remove python3-pip; sudo apt-get install python3-pip
   

   If using Fedora, CentOS, RHEL, please use:

   sudo dnf reinstall python3-pip
   

2. Try using the command python3-pip instead (works on Fedora; I don't have a copy of Kubuntu to try it on).

3. Just a wild guess...check pip --version. There is a slight possibility that after installing python3-pip the new pip would replace the old pip (perhaps via alternatives?)

EDIT
Now that the output of dpkg -L python3-pip has been added to the question, I can provide the answer.

The correct command name to use is: pip-3.2.

Answer 2

I ran into this problem and found the solution. The python3-pip package installed a pip-3.2 binary.

Executing pip-3.2 --version shows:

pip 1.1 from /usr/lib/python3/dist-packages (python 3.2)

Whereas python3-pip gives the command not found message.

I tested it on a "clean" download from here: https://sourceforge.net/projects/rpiqemuwindows/

I checked for pip-3.2 before installing python3-pip and then after.

Answer 3

If you have several Python versions installed, you might get:

bash: pip3: command not found...
Packages providing this file are:
'python36'
'python39-pip'
'python38-pip'

Listing the installed pips shows why:

$ ls -l /usr/bin | grep pip.*3
pip-3.6 -> ./pip3.6
pip3.6
pip-3.9 -> ./pip3.9
pip3.9

Resetting pip3 link could resolve it:

$ sudo ln -s /usr/bin/pip3.9 /usr/bin/pip3
$ pip3
Usage:

  pip3 <command> [options]

Answer 4

You can use use easy_install:

apt-get install python3-setuptools
easy_install3 pip