pip: incorrect behavior of pip install --upgrade pip

It installs a different version (7.1.2) than it downloaded (8.0.2). No idea how that’s even possible, even if I had a 7.1.2 wheel already cached from an install for a different Python version.

<installed something ...>
You are using pip version 6.0.3, however version 8.0.2 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.

rgommers@machine:~/Code/tmp$ pip install --upgrade pip
/usr/local/lib/python2.7/site-packages/pip/_vendor/requests/packages/urllib3/util/ssl_.py:90: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. For more information, see https://urllib3.readthedocs.org/en/latest/security.html#insecureplatformwarning.
  InsecurePlatformWarning
Collecting pip
  Downloading pip-8.0.2-py2.py3-none-any.whl (1.2MB)
    100% |████████████████████████████████| 1.2MB 226kB/s
Installing collected packages: pip
  Found existing installation: pip 6.0.3
    Uninstalling pip-6.0.3:
      Successfully uninstalled pip-6.0.3
Successfully installed pip-7.1.2
You are using pip version 7.1.2, however version 8.0.2 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.

rgommers@machine:~/Code/tmp$ pip install --upgrade pip
Collecting pip
  Using cached pip-8.0.2-py2.py3-none-any.whl
Installing collected packages: pip
  Found existing installation: pip 7.1.2
    Uninstalling pip-7.1.2:
      Successfully uninstalled pip-7.1.2
Successfully installed pip-8.0.2

About this issue

Original URL
State: closed
Created 8 years ago
Comments: 33 (25 by maintainers)

Commits related to this issue

write only relative path in 'RECORD' RECORD now contains only relative path. some bugs triggered by a bleeding edge usage of python may disappear a result (https://github.com/pypa/pip/issues/3433) — committed to stonebig/pip by stonebig 8 years ago

Most upvoted comments

The issue seems to be that when you have two or more pips installed in different places, it uninstalls the one that’s first on the path, then reports that it has installed the version that is already installed.

This I concluded from another attempt on a different machine:

$ pip install --upgrade pip --user
Collecting pip
  Using cached pip-8.0.2-py2.py3-none-any.whl
Installing collected packages: pip
  Found existing installation: pip 8.0.0.dev0
    Uninstalling pip-8.0.0.dev0:
      Successfully uninstalled pip-8.0.0.dev0
Successfully installed pip-1.5.4
You are using pip version 1.5.4, however version 8.0.2 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.
rgommers@machine:~/Code/numpy (master)$ pip --version
pip 1.5.4 from /usr/lib/python2.7/dist-packages (python 2.7)

dist-packages is the one shipped with the OS. And since I didn’t use sudo, I’m sure that 1.5.4 wasn’t actually installed even though pip tells me that.

rgommers on Jan 31, 2016