Non-importerror upgrading issue

[RDIL]

Environment

• pip version: 19.3
• Python version: 381
• OS: Windows 10

This happened while trying to upgrade pip with python -m pip install --upgrade pip (in an admin shell)

Stack:

ERROR: Exception:
Traceback (most recent call last):
  File "C:\Users\gibdu\AppData\Roaming\Python\Python38\site-packages\pip\_internal\cli\base_command.py", line 153, in _main
    status = self.run(options, args)
  File "C:\Users\gibdu\AppData\Roaming\Python\Python38\site-packages\pip\_internal\commands\install.py", line 446, in run
    installed = install_given_reqs(
  File "C:\Users\gibdu\AppData\Roaming\Python\Python38\site-packages\pip\_internal\req\__init__.py", line 58, in install_given_reqs
    requirement.install(
  File "C:\Users\gibdu\AppData\Roaming\Python\Python38\site-packages\pip\_internal\req\req_install.py", line 858, in install
    self.move_wheel_files(
  File "C:\Users\gibdu\AppData\Roaming\Python\Python38\site-packages\pip\_internal\req\req_install.py", line 487, in move_wheel_files
    wheel.move_wheel_files(
  File "C:\Users\gibdu\AppData\Roaming\Python\Python38\site-packages\pip\_internal\wheel.py", line 594, in move_wheel_files
    generated_console_scripts = maker.make_multiple(scripts_to_generate)
  File "C:\Users\gibdu\AppData\Roaming\Python\Python38\site-packages\pip\_vendor\distlib\scripts.py", line 402, in make_multiple
    filenames.extend(self.make(specification, options))
  File "C:\Users\gibdu\AppData\Roaming\Python\Python38\site-packages\pip\_internal\wheel.py", line 330, in make
    return super(PipScriptMaker, self).make(specification, options)
  File "C:\Users\gibdu\AppData\Roaming\Python\Python38\site-packages\pip\_vendor\distlib\scripts.py", line 391, in make
    self._make_script(entry, filenames, options=options)
  File "C:\Users\gibdu\AppData\Roaming\Python\Python38\site-packages\pip\_vendor\distlib\scripts.py", line 295, in _make_script
    self._write_script(scriptnames, shebang, script, filenames, ext)
  File "C:\Users\gibdu\AppData\Roaming\Python\Python38\site-packages\pip\_vendor\distlib\scripts.py", line 231, in _write_script
    launcher = self._get_launcher('t')
  File "C:\Users\gibdu\AppData\Roaming\Python\Python38\site-packages\pip\_vendor\distlib\scripts.py", line 370, in _get_launcher
    result = finder(distlib_package).find(name).bytes
AttributeError: 'NoneType' object has no attribute 'bytes'
WARNING: You are using pip version 19.3.1; however, version 20.0.2 is available.
You should consider upgrading via the 'python -m pip install --upgrade pip' command.

[uranusjr]

I am confused. Why did you specifically mention the error is not an ImportError? Is there a reason you think is significant?

[RDIL]

Well I know a lot of the windows upgrading problems have to do with importerrors so I thought I would just clarify.

[uranusjr]

I see, thanks for the information! Would you mind trying to upgrade pip to 20.0 and see whether the issue persists? This looks similar to #6546, which should be resolved in more recent versions.

[RDIL]

Well so I am trying to upgrade my pip from 19.3 to 20 but this is the error I'm getting!

[uranusjr]

Try downloading the .whl directly from PyPI, and run python /path/to/downloaded.whl/pip install --upgrade pip instead. I’m not completely sure whether that would work, but worth a try.

[pfmoore]

... or download https://bootstrap.pypa.io/get-pip.py and run python get-pip.py --upgrade (which does basically the same thing, but is the documented approach 🙂)