pip 升级到 21.0.1 后报错 sys.stderr.write(f“ERROR: {exc}“)

我不是女神ヾ 2022-10-30 08:28 74阅读 0赞

# yum install python2-pip
    # pip install --upgrade pip
    # pip version
    
    Traceback (most recent call last):
      File "/usr/bin/pip", line 9, in <module>
        load_entry_point('pip==21.0.1', 'console_scripts', 'pip')()
      File "/usr/lib/python2.7/site-packages/pkg_resources.py", line 378, in load_entry_point
        return get_distribution(dist).load_entry_point(group, name)
      File "/usr/lib/python2.7/site-packages/pkg_resources.py", line 2566, in load_entry_point
        return ep.load()
      File "/usr/lib/python2.7/site-packages/pkg_resources.py", line 2260, in load
        entry = __import__(self.module_name, globals(),globals(), ['__name__'])
      File "/usr/lib/python2.7/site-packages/pip/_internal/cli/main.py", line 60
        sys.stderr.write(f"ERROR: {exc}")
                                       ^
    SyntaxError: invalid syntax

通过如下解决

# wget https://bootstrap.pypa.io/2.7/get-pip.py 
    # python get-pip.py
    DEPRECATION: Python 2.7 reached the end of its life on January 1st, 2020. Please upgrade your Python as Python 2.7 is no longer maintained. pip 21.0 will drop support for Python 2.7 in January 2021. More details about Python 2 support in pip can be found at https://pip.pypa.io/en/latest/development/release-process/#python-2-support pip 21.0 will remove support for this functionality.
    Collecting pip<21.0
      Downloading pip-20.3.4-py2.py3-none-any.whl (1.5 MB)
         |▏                               | 10 kB 5.0 kB/s eta 0:05:03

哈哈，看到提示:  
pip 21.0 will drop support for Python 2.7 in January 2021.

非要使用，就只能降级到 pip 20版本了。

或者更新时指定版本号

# pip install --upgrade pip==20.3.4