尝试升级pip，但错误'WinError 5'出现了

Question

I've found a problem with pip and can't do anything with it anymore. I'm on a Windows 7 computer and have a Dutch language (maybe it will occur problems with reading)

I did use pip version 8.1.1, but there's a newer version, 9.0.1. I installed it using 'pip install --upgrade pip' and he's doing pretty well so it uninstalled the previous version of pip and then the problem came. Now I can't use pip as well. When I try to install or upgrade my system says: 'ImportError: No module named pip'.

I had this problem somewhere in 2016 and never found an answer, so I installed Python again on my computer. I hope there's a better way to do this instead of install whole Python and all those modules again.

So for me is this a bit strange, I hope anyone know this problem and knows a way to fix this. Beneath I'll show up the texts in the command prompt.

Code:

You are using pip version 8.1.1, however version 9.0.1 is available.
You should consider upgrading via the 'python -m pip install --upgrade pip' comm
and.

D:\PythonProjects\Python Crash Course\learning_log\ll_env\Scripts>pip install --
upgrade pip
Collecting pip
  Using cached pip-9.0.1-py2.py3-none-any.whl
Installing collected packages: pip
  Found existing installation: pip 8.1.1
    Uninstalling pip-8.1.1:
Exception:
Traceback (most recent call last):
  File "C:\Users\Pascal\AppData\Local\Programs\Python\Python35\lib\shutil.py", l
ine 538, in move
    os.rename(src, real_dst)
OSError: [WinError 17] Het systeem kan het bestand niet verplaatsen naar een and
er station: 'd:\\pythonprojects\\python crash course\\learning_log\\ll_env\\scri
pts\\pip.exe' -> 'C:\\Users\\Pascal\\AppData\\Local\\Temp\\pip-0hagtsau-uninstal
l\\pythonprojects\\python crash course\\learning_log\\ll_env\\scripts\\pip.exe'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "d:\pythonprojects\python crash course\learning_log\ll_env\lib\site-packa
ges\pip\basecommand.py", line 209, in main
  File "d:\pythonprojects\python crash course\learning_log\ll_env\lib\site-packa
ges\pip\commands\install.py", line 317, in run
  File "d:\pythonprojects\python crash course\learning_log\ll_env\lib\site-packa
ges\pip\req\req_set.py", line 726, in install
  File "d:\pythonprojects\python crash course\learning_log\ll_env\lib\site-packa
ges\pip\req\req_install.py", line 746, in uninstall
  File "d:\pythonprojects\python crash course\learning_log\ll_env\lib\site-packa
ges\pip\req\req_uninstall.py", line 115, in remove
  File "d:\pythonprojects\python crash course\learning_log\ll_env\lib\site-packa
ges\pip\utils\__init__.py", line 267, in renames
  File "C:\Users\Pascal\AppData\Local\Programs\Python\Python35\lib\shutil.py", l
ine 553, in move
    os.unlink(src)
PermissionError: [WinError 5] Toegang geweigerd: 'd:\\pythonprojects\\python cra
sh course\\learning_log\\ll_env\\scripts\\pip.exe'

D:\PythonProjects\Python Crash Course\learning_log\ll_env\Scripts>pip freeze > r
equirements.txt
Traceback (most recent call last):
  File "C:\Users\Pascal\AppData\Local\Programs\Python\Python35\lib\runpy.py", li
ne 184, in _run_module_as_main
    "__main__", mod_spec)
  File "C:\Users\Pascal\AppData\Local\Programs\Python\Python35\lib\runpy.py", li
ne 85, in _run_code
    exec(code, run_globals)
  File "D:\PythonProjects\Python Crash Course\learning_log\ll_env\Scripts\pip.ex
e\__main__.py", line 5, in <module>
ImportError: No module named 'pip'

Answer 1

This is related to disk drives on Windows. Pip downloads the new files to your current drive ( D: ) and then tries to move them over to the system files (on C: ) and fails.

(See https://github.com/pypa/pip/issues/2824 )

Could you run

python -m pip install -U pip

or is pip completely gone?

If it's gone then you would have to re-install it. Maybe re-installing all of Python is easier although probably more time consuming.