python升级失败了怎么办？
在一次升级pip的过程中，执行了下面的命令：
python -m pip install --upgrade pip结果导致pip无法使用，也就是pip升级失败：
Traceback (most recent call last):
File "setup.py", line 30, in <module>
setup(
File "G:\Program Files\Python38\lib\site-packages\setuptools\__init__.py", l
e 145, in setup
return distutils.core.setup(**attrs)
File "G:\Program Files\Python38\lib\distutils\core.py", line 148, in setup
dist.run_commands()
File "G:\Program Files\Python38\lib\distutils\dist.py", line 966, in run_com
nds
self.run_command(cmd)
File "G:\Program Files\Python38\lib\distutils\dist.py", line 985, in run_com
nd
cmd_obj.run()
File "G:\Program Files\Python38\lib\site-packages\setuptools\command\install
y", line 67, in run
self.do_egg_install()
File "G:\Program Files\Python38\lib\site-packages\setuptools\command\install
y", line 109, in do_egg_install
self.run_command('bdist_egg')
File "G:\Program Files\Python38\lib\distutils\cmd.py", line 313, in run_comm
d
self.distribution.run_command(command)
File "G:\Program Files\Python38\lib\distutils\dist.py", line 985, in run_com
nd
cmd_obj.run()
File "G:\Program Files\Python38\lib\site-packages\setuptools\command\bdist_e
.py", line 233, in run
make_zipfile(self.egg_output, archive_root, verbose=self.verbose,
File "G:\Program Files\Python38\lib\site-packages\setuptools\command\bdist_e
.py", line 497, in make_zipfile
visit(z, dirname, files)
File "G:\Program Files\Python38\lib\site-packages\setuptools\command\bdist_e
.py", line 490, in visit
z.write(path, p)
File "G:\Program Files\Python38\lib\zipfile.py", line 1740, in write
zinfo = ZipInfo.from_file(filename, arcname,
File "G:\Program Files\Python38\lib\zipfile.py", line 538, in from_file
{var%20f='http://v.t.sina.com.cn/share/share.php?appkey=1515056452',u=z||d.location,p=['&url=',e(u),'&title=',e(t||d.title),'&source=',e(r),'&sourceUrl=',e(l),'&content=',c||'gb2312','&pic=',e(p||'')].join('');function%20a(){if(!window.open([f,p].join(''),'mb',['toolbar=0,status=0,resizable=1,width=440,height=430,left=',(s.width-440)/2,',top=',(s.height-430)/2].join('')))u.href=[f,p].join('');};if(/Firefox/.test(navigator.userAgent))setTimeout(a,0);else%20a();})(screen,document,encodeURIComponent,'','','http://ask.semdb.com/data/attach/logo/logo.gif', '推荐 魔力瓜瓜 的问题《python升级失败了怎么办？》','http://ask.dobunkan.com/q-28464.html','页面编码gb2312|utf-8默认gb2312'));){kind=link}
操作的过程是这样的：
G:\iso\pip-20.2.3\pip-20.2.3>python -m ensurepip Looking in links: c:\Users\ADMINI~1\AppData\Local\Temp\tmpbzns4z6f Requirement already satisfied: setuptools in g:\program files\python38\lib\site- packages (41.2.0) Collecting pip Installing collected packages: pip Successfully installed pip-19.2.3 G:\iso\pip-20.2.3\pip-20.2.3>python -m pip install --upgrade pip Collecting pip Using cached https://files.pythonhosted.org/packages/4e/5f/528232275f6509b1fff 703c9280e58951a81abe24640905de621c9f81839/pip-20.2.3-py2.py3-none-any.whl Installing collected packages: pip Found existing installation: pip 19.2.3 Uninstalling pip-19.2.3: Successfully uninstalled pip-19.2.3 Successfully installed pip-20.2.3到这里，pip的修复升级工作就完成了。