No module named pip._vendor

[policetonyR]

Environment

• pip version: 19.0.3?
• Python version: 3.7.4
• OS: Windows 10

Description
Pip is erroring out anytime it's ran

Expected behavior
To run pip

How to Reproduce
Run pip and have my pc (honestly no clue)

Output

C:\Users\Owner>pip
Traceback (most recent call last):
  File "c:\users\owner\appdata\local\programs\python\python37-32\lib\runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "c:\users\owner\appdata\local\programs\python\python37-32\lib\runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "C:\Users\Owner\AppData\Local\Programs\Python\Python37-32\Scripts\pip.exe\__main__.py", line 5, in <module>
  File "C:\Users\Owner\AppData\Roaming\Python\Python37\site-packages\pip\_internal\__init__.py", line 19, in <module>
    from pip._vendor.urllib3.exceptions import DependencyWarning
ModuleNotFoundError: No module named 'pip._vendor'

[policetonyR]

i've realized my version is 19.2.2

[venthur]

Cannot reproduce this on Linux:

(venv) venthur@fiona:/tmp$ pip install pip==19.2.2
Collecting pip==19.2.2
  Cache entry deserialization failed, entry ignored
  Cache entry deserialization failed, entry ignored
  Downloading https://files.pythonhosted.org/packages/8d/07/f7d7ced2f97ca3098c16565efbe6b15fafcba53e8d9bdb431e09140514b0/pip-19.2.2-py2.py3-none-any.whl (1.4MB)
    100% |████████████████████████████████| 1.4MB 554kB/s 
Installing collected packages: pip
  Found existing installation: pip 18.1
    Uninstalling pip-18.1:
      Successfully uninstalled pip-18.1
Successfully installed pip-19.2.2

(venv) venthur@fiona:/tmp$ pip

Usage:   
  pip <command> [options]
  ...

(venv) venthur@fiona:/tmp$ pip --version
pip 19.2.2 from /tmp/venv/lib/python3.7/site-packages/pip (python 3.7)

[pradyunsg]

Hi @policetonyR! Since you've not provided any hint as to why the issue is occurring, could you download https://bootstrap.pypa.io/get-pip.py and run it with the python.exe file in C:\Users\Owner\AppData\Local\Programs\Python\Python37-32?

# download get-pip.py
C:\Users\Owner\AppData\Local\Programs\Python\Python37-32\python.exe get-pip.py

[policetonyR]

already tried that and just tried it. the python prompt closed after it said it found installation and reinstalled.

[chrahunt]

Are you still getting the same exact error? Can you check if there are files in C:\Users\Owner\AppData\Roaming\Python\Python37\site-packages\pip\_vendor\?

[policetonyR]

[chrahunt]

Somehow your installation has been corrupted - maybe overzealous anti-virus or some command was stopped partway through. In any case that pip is missing files.

You may try to remove C:\Users\Owner\AppData\Roaming\Python\Python37\site-packages\pip\ and C:\Users\Owner\AppData\Roaming\Python\Python37\site-packages\pip-*.dist-info\ (with the pip version instead of *) then install it again with the instructions given above.

[policetonyR]

that worked thanks