pip错误：TypeError: parse() got an unexpected keyword argument 'transport_encoding'

安装tensorflow后使用pip出现如下问题

  Exception:
    Traceback (most recent call last):
      File "C:\ProgramData\Anaconda3\lib\site-packages\pip\basecommand.py", line 215, in main
        status = self.run(options, args)
      File "C:\ProgramData\Anaconda3\lib\site-packages\pip\commands\install.py", line 335, in run
        wb.build(autobuilding=True)
      File "C:\ProgramData\Anaconda3\lib\site-packages\pip\wheel.py", line 749, in build
        self.requirement_set.prepare_files(self.finder)
      File "C:\ProgramData\Anaconda3\lib\site-packages\pip\req\req_set.py", line 380, in prepare_files
        ignore_dependencies=self.ignore_dependencies))
      File "C:\ProgramData\Anaconda3\lib\site-packages\pip\req\req_set.py", line 554, in _prepare_file
        require_hashes
      File "C:\ProgramData\Anaconda3\lib\site-packages\pip\req\req_install.py", line 278, in populate_link
        self.link = finder.find_requirement(self, upgrade)
      File "C:\ProgramData\Anaconda3\lib\site-packages\pip\index.py", line 465, in find_requirement
        all_candidates = self.find_all_candidates(req.name)
      File "C:\ProgramData\Anaconda3\lib\site-packages\pip\index.py", line 423, in find_all_candidates
        for page in self._get_pages(url_locations, project_name):
      File "C:\ProgramData\Anaconda3\lib\site-packages\pip\index.py", line 568, in _get_pages
        page = self._get_page(location)
      File "C:\ProgramData\Anaconda3\lib\site-packages\pip\index.py", line 683, in _get_page
        return HTMLPage.get_page(link, session=self.session)
      File "C:\ProgramData\Anaconda3\lib\site-packages\pip\index.py", line 811, in get_page
        inst = cls(resp.content, resp.url, resp.headers)
      File "C:\ProgramData\Anaconda3\lib\site-packages\pip\index.py", line 731, in __init__
        namespaceHTMLElements=False,
    TypeError: parse() got an unexpected keyword argument 'transport_encoding' 

使用 conda install -c anaconda html5lib重新安装pip即可
如若不行则使用conda install pip