Python3 pip无法安装模块

尝试使用pip安装模块时出现SSL错误，我在网上四处张望，找到了解决该问题的常用方法：

C:\Python35>pip3 install --index-url=http://pypi.python.org/simple/ --trusted-host pypi.python.org sphinx

但是，运行此命令不起作用，正如我所想。我究竟做错了什么？

C:\Python35>pip3 install --index-url=http://pypi.python.org/simple/ --trusted-host pypi.python.org -vvv sphinx
Config variable 'Py_DEBUG' is unset, Python ABI tag may be incorrect
Config variable 'WITH_PYMALLOC' is unset, Python ABI tag may be incorrect
Collecting sphinx
  1 location(s) to search for versions of sphinx:
  * http://pypi.python.org/simple/sphinx/
  Getting page http://pypi.python.org/simple/sphinx/
  Starting new HTTP connection (1): pypi.python.org
  "GET /simple/sphinx/ HTTP/1.1" 403 16
  Could not fetch URL http://pypi.python.org/simple/sphinx/: 403 Client Error: SSL is required for url: http://pypi.python.org/simple/sphinx/ - skipping
  Could not find a version that satisfies the requirement sphinx (from versions: )
Cleaning up...
No matching distribution found for sphinx
Exception information:
Traceback (most recent call last):
  File "C:\python35\lib\site-packages\pip\basecommand.py", line 215, in main
    status = self.run(options, args)
  File "C:\python35\lib\site-packages\pip\commands\install.py", line 324, in run
    requirement_set.prepare_files(finder)
  File "C:\python35\lib\site-packages\pip\req\req_set.py", line 380, in prepare_files
    ignore_dependencies=self.ignore_dependencies))
  File "C:\python35\lib\site-packages\pip\req\req_set.py", line 554, in _prepare_file
    require_hashes
  File "C:\python35\lib\site-packages\pip\req\req_install.py", line 278, in populate_link
    self.link = finder.find_requirement(self, upgrade)
  File "C:\python35\lib\site-packages\pip\index.py", line 514, in find_requirement
    'No matching distribution found for %s' % req
pip.exceptions.DistributionNotFound: No matching distribution found for sphinx

问候

编辑为Mukul Sharma使用

C：\ Python35> pip3 install --index-url = https：//pypi.python.org/simple/ --trusted-host pypi.python.org -vvv sphinx

而是解决了我的问题。