(已解决）pip3报错：from pip._internal.cli.main import main File “/usr/local/lib/python3.5/dist-packages/p

liuzhicheng@Rivotek:~$ pip3 -V
Traceback (most recent call last):
  File "/home/liuzhicheng/.local/bin/pip3", line 7, in <module>
    from pip._internal.cli.main import main
  File "/home/liuzhicheng/.local/lib/python3.5/site-packages/pip/_internal/cli/main.py", line 57
    sys.stderr.write(f"ERROR: {exc}")
                                   ^
SyntaxError: invalid syntax
liuzhicheng@Rivotek:~$ 
liuzhicheng@Rivotek:~$ curl -fsSL -o- https://bootstrap.pypa.io/pip/3.5/get-pip.py | python3.5
DEPRECATION: Python 3.5 reached the end of its life on September 13th, 2020. Please upgrade your Python as Python 3.5 is no longer maintained. pip 21.0 will drop support for Python 3.5 in January 2021. pip 21.0 will remove support for this functionality.
Defaulting to user installation because normal site-packages is not writeable
Collecting pip<21.0
  Downloading pip-20.3.4-py2.py3-none-any.whl (1.5 MB)
     |████████████████████████████████| 1.5 MB 1.1 MB/s 
Installing collected packages: pip
  Attempting uninstall: pip
    Found existing installation: pip 22.0.4
    Uninstalling pip-22.0.4:
      Successfully uninstalled pip-22.0.4
Successfully installed pip-20.3.4
liuzhicheng@Rivotek:~$ pip3 -V
pip 20.3.4 from /home/liuzhicheng/.local/lib/python3.5/site-packages/pip (python 3.5)
liuzhicheng@Rivotek:~$