点子不想被安装

Question

在控制台中找不到pip。当我尝试通过get-pip下载它时，它在控制台中产生以下错误。我从官方网站下载了最新版本3.7.4。其他版本也观察到了同样的情况。如何解决？

F:\pic.png>python get-pip.py
Traceback (most recent call last):
  File "get-pip.py", line 21492, in <module>
    main()
  File "get-pip.py", line 197, in main
    bootstrap(tmpdir=tmpdir)
  File "get-pip.py", line 82, in bootstrap
    import pip._internal
  File "<frozen importlib._bootstrap>", line 983, in _find_and_load
  File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 668, in _load_unlocked
  File "<frozen importlib._bootstrap>", line 638, in _load_backward_compatible
  File "C:\Users\75E3~1\AppData\Local\Temp\tmpmb245qvv\pip.zip\pip\_internal\__i
nit__.py", line 40, in <module>
  File "<frozen importlib._bootstrap>", line 983, in _find_and_load
  File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 668, in _load_unlocked
  File "<frozen importlib._bootstrap>", line 638, in _load_backward_compatible
  File "C:\Users\75E3~1\AppData\Local\Temp\tmpmb245qvv\pip.zip\pip\_internal\cli
\autocompletion.py", line 8, in <module>
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  File "C:\Users\75E3~1\AppData\Local\Temp\tmpmb245qvv\pip.zip\pip\_vendor\reque
sts\_internal_utils.py", line 11, in <module>
  File "<frozen importlib._bootstrap>", line 983, in _find_and_load
  File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 668, in _load_unlocked
  File "<frozen importlib._bootstrap>", line 638, in _load_backward_compatible
  File "C:\Users\75E3~1\AppData\Local\Temp\tmpmb245qvv\pip.zip\pip\_vendor\reque
sts\compat.py", line 64, in <module>
  File "<frozen importlib._bootstrap>", line 983, in _find_and_load
  File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 724, in exec_module
  File "<frozen importlib._bootstrap_external>", line 859, in get_code
  File "<frozen importlib._bootstrap_external>", line 917, in get_data
OSError: [Errno 9] Bad file descriptor