[Bug] Pip not upgrade on Windows if UAC disabled

[Kristinita]

Summary

I can not upgrade pip in my Windows. I saw some similar issues on this repository, I saw in this and this answer, that I need run command in Administrator mode. But I disable UAC on my Windows and I never want use UAC.

Expected behavior

Successful pip upgrade.

Actual behavior

C:\WINDOWS\system32>python -m pip install --upgrade pip
Collecting pip
  Downloading pip-9.0.0-py2.py3-none-any.whl (1.3MB)
    100% |################################| 1.3MB 647kB/s
Installing collected packages: pip
  Found existing installation: pip 8.1.2
    Uninstalling pip-8.1.2:
      Successfully uninstalled pip-8.1.2
  Rolling back uninstall of pip
Exception:
Traceback (most recent call last):
  File "E:\Python35-32\lib\site-packages\pip-8.1.2-py3.5.egg\pip\basecommand.py", line 215, in main
    status = self.run(options, args)
  File "E:\Python35-32\lib\site-packages\pip-8.1.2-py3.5.egg\pip\commands\install.py", line 317, in run
    prefix=options.prefix_path,
  File "E:\Python35-32\lib\site-packages\pip-8.1.2-py3.5.egg\pip\req\req_set.py", line 742, in install
    **kwargs
  File "E:\Python35-32\lib\site-packages\pip-8.1.2-py3.5.egg\pip\req\req_install.py", line 831, in install
    self.move_wheel_files(self.source_dir, root=root, prefix=prefix)
  File "E:\Python35-32\lib\site-packages\pip-8.1.2-py3.5.egg\pip\req\req_install.py", line 1032, in move_wheel_files
    isolated=self.isolated,
  File "E:\Python35-32\lib\site-packages\pip-8.1.2-py3.5.egg\pip\wheel.py", line 463, in move_wheel_files
    generated.extend(maker.make(spec))
  File "E:\Python35-32\lib\site-packages\pip-8.1.2-py3.5.egg\pip\_vendor\distlib\scripts.py", line 372, in make
    self._make_script(entry, filenames, options=options)
  File "E:\Python35-32\lib\site-packages\pip-8.1.2-py3.5.egg\pip\_vendor\distlib\scripts.py", line 276, in _make_script
    self._write_script(scriptnames, shebang, script, filenames, ext)
  File "E:\Python35-32\lib\site-packages\pip-8.1.2-py3.5.egg\pip\_vendor\distlib\scripts.py", line 212, in _write_script
    launcher = self._get_launcher('t')
  File "E:\Python35-32\lib\site-packages\pip-8.1.2-py3.5.egg\pip\_vendor\distlib\scripts.py", line 351, in _get_launcher
    result = finder(distlib_package).find(name).bytes
AttributeError: 'NoneType' object has no attribute 'bytes'
You are using pip version 8.1.2, however version 9.0.0 is available.
You should consider upgrading via the 'python -m pip install --upgrade pip' command.

C:\WINDOWS\system32>pip --version
pip 8.1.2 from e:\python35-32\lib\site-packages\pip-8.1.2-py3.5.egg (python 3.5)

Steps to reproduce

I run python -m pip install --upgrade pip command in cmd.exe.

Environment

Operating system and version:
Windows 32-bit 10.0.14393
Python:
3.5.2
pip
8.1.2 from e:\python35-32\lib\site-packages\pip-8.1.2-py3.5.egg (python 3.5)

Thanks.

[xavfernandez]

@Kristinita how did you initially install pip ? The pip-8.1.2-py3.5.egg smells like you used easy_install ?
It looks like a duplicate of #2669.
Did you try python -m pip install -U --force-reinstall pip ?

[Kristinita]

how did you initially install pip ?

I install pip many times ago, I can not remember exactly. But likely I only download python 3.5.2 from official site. I'm not use easy_install.

Did you try python -m pip install -U --force-reinstall pip

Thanks! I think, it helped for me!

C:\WINDOWS\system32>python -m pip install -U --force-reinstall pip
Collecting pip
  Using cached pip-9.0.0-py2.py3-none-any.whl
Installing collected packages: pip
  Found existing installation: pip 9.0.0
    Uninstalling pip-9.0.0:
      Successfully uninstalled pip-9.0.0
Successfully installed pip-9.0.0

C:\WINDOWS\system32>pip --version
pip 9.0.0 from e:\python35-32\lib\site-packages (python 3.5)