解决pip安装时出现报错TypeError: unsupported operand type(s) for -=: ‘Retry‘ and ‘int‘

我在Linux下使用pip安装时出现报错：

Exception:
Traceback (most recent call last):File "/usr/lib/python2.7/dist-packages/pip/basecommand.py", line 215, in mainstatus = self.run(options, args)File "/usr/lib/python2.7/dist-packages/pip/commands/install.py", line 353, in runwb.build(autobuilding=True)File "/usr/lib/python2.7/dist-packages/pip/wheel.py", line 749, in buildself.requirement_set.prepare_files(self.finder)File "/usr/lib/python2.7/dist-packages/pip/req/req_set.py", line 380, in prepare_filesignore_dependencies=self.ignore_dependencies))File "/usr/lib/python2.7/dist-packages/pip/req/req_set.py", line 554, in _prepare_filerequire_hashesFile "/usr/lib/python2.7/dist-packages/pip/req/req_install.py", line 278, in populate_linkself.link = finder.find_requirement(self, upgrade)File "/usr/lib/python2.7/dist-packages/pip/index.py", line 465, in find_requirementall_candidates = self.find_all_candidates(req.name)File "/usr/lib/python2.7/dist-packages/pip/index.py", line 423, in find_all_candidatesfor page in self._get_pages(url_locations, project_name):File "/usr/lib/python2.7/dist-packages/pip/index.py", line 568, in _get_pagespage = self._get_page(location)File "/usr/lib/python2.7/dist-packages/pip/index.py", line 683, in _get_pagereturn HTMLPage.get_page(link, session=self.session)File "/usr/lib/python2.7/dist-packages/pip/index.py", line 792, in get_page"Cache-Control": "max-age=600",File "/usr/share/python-wheels/requests-2.12.4-py2.py3-none-any.whl/requests/sessions.py", line 501, in getreturn self.request('GET', url, **kwargs)File "/usr/lib/python2.7/dist-packages/pip/download.py", line 386, in requestreturn super(PipSession, self).request(method, url, *args, **kwargs)File "/usr/share/python-wheels/requests-2.12.4-py2.py3-none-any.whl/requests/sessions.py", line 488, in requestresp = self.send(prep, **send_kwargs)File "/usr/share/python-wheels/requests-2.12.4-py2.py3-none-any.whl/requests/sessions.py", line 609, in sendr = adapter.send(request, **kwargs)File "/usr/share/python-wheels/CacheControl-0.11.7-py2.py3-none-any.whl/cachecontrol/adapter.py", line 47, in sendresp = super(CacheControlAdapter, self).send(request, **kw)File "/usr/share/python-wheels/requests-2.12.4-py2.py3-none-any.whl/requests/adapters.py", line 423, in sendtimeout=timeoutFile "/usr/share/python-wheels/urllib3-1.19.1-py2.py3-none-any.whl/urllib3/connectionpool.py", line 643, in urlopen_stacktrace=sys.exc_info()[2])File "/usr/share/python-wheels/urllib3-1.19.1-py2.py3-none-any.whl/urllib3/util/retry.py", line 315, in incrementtotal -= 1
TypeError: unsupported operand type(s) for -=: 'Retry' and 'int'

错误的解决方法

网上有一个错误的解决方案

pip install --upgrade pip

运行这个命令后，进行pip安装会报另外一个错：

Traceback (most recent call last):File "/usr/bin/pip", line 9, in <module>from pip import main
ImportError: cannot import name main

解决方法是重新安装pip，如：

python -m pip uninstall pip && sudo apt install python-pip --reinstall

或者可以修改/usr/bin/pip文件，
把

from pip import main

改为

from pip._internal import main

正确的解决方案

使用如下命令

python -m pip install --upgrade pip
python -m pip install xxx

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解决pip安装时出现报错TypeError: unsupported operand type(s) for -=: ‘Retry‘ and ‘int‘

错误的解决方法

正确的解决方案

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