title: Cannot install python package in Git Bash
body: <p>I'm trying to install a package from my company's internal artifactory storage. I'm getting 2 exceptions in Gitbash that I can't understand. When I run Pip Freeze I don't see the install package, so I don't believe it is already installed.</p>
  
  <p>After reading the exceptions, I don't understand what's going on, is anyone familiar with this?</p>
  
  <pre><code>pip install --no-dependencies --user -i https://artifactory.cloud.company.com/artifactory/api/pypi/pypi-python-org/simple git+https://github.kdc.company.com/MandR/package.git
  Looking in indexes: https://artifactory.cloud.company.com/artifactory/api/pypi/pypi-python-org/simple
  Collecting git+https://github.kdc.company.com/MandR/package.git
    Cloning https://github.kdc.company.com/MandR/package.git to c:\users\user_name\appdata\local\temp\pip-req-build-ptb41on4
  Exception:
  Traceback (most recent call last):
    File "c:\users\user_name\appdata\local\continuum\anaconda3\lib\site-packages\pip\_internal\req\req_install.py", line 339, in check_if_exists
      self.satisfied_by = pkg_resources.get_distribution(str(no_marker))
    File "c:\users\user_name\appdata\local\continuum\anaconda3\lib\site-packages\pip\_vendor\pkg_resources\__init__.py", line 476, in get_distribution
      dist = get_provider(dist)
    File "c:\users\user_name\appdata\local\continuum\anaconda3\lib\site-packages\pip\_vendor\pkg_resources\__init__.py", line 352, in get_provider
      return working_set.find(moduleOrReq) or require(str(moduleOrReq))[0]
    File "c:\users\user_name\appdata\local\continuum\anaconda3\lib\site-packages\pip\_vendor\pkg_resources\__init__.py", line 895, in require
      needed = self.resolve(parse_requirements(requirements))
    File "c:\users\user_name\appdata\local\continuum\anaconda3\lib\site-packages\pip\_vendor\pkg_resources\__init__.py", line 786, in resolve
      raise VersionConflict(dist, req).with_context(dependent_req)
  pip._vendor.pkg_resources.ContextualVersionConflict: (tables 3.4.3 (c:\users\user_name\appdata\local\continuum\anaconda3\lib\site-packages), Requirement.parse('tables==3.2.0'), {'package'})
  </code></pre>
  
  <p>During handling of the above exception, another exception occurred:</p>
  
  <pre><code>Traceback (most recent call last):
    File "c:\users\user_name\appdata\local\continuum\anaconda3\lib\site-packages\pip\_internal\cli\base_command.py", line 143, in main
      status = self.run(options, args)
    File "c:\users\user_name\appdata\local\continuum\anaconda3\lib\site-packages\pip\_internal\commands\install.py", line 318, in run
      resolver.resolve(requirement_set)
    File "c:\users\user_name\appdata\local\continuum\anaconda3\lib\site-packages\pip\_internal\resolve.py", line 102, in resolve
      self._resolve_one(requirement_set, req)
    File "c:\users\user_name\appdata\local\continuum\anaconda3\lib\site-packages\pip\_internal\resolve.py", line 256, in _resolve_one
      abstract_dist = self._get_abstract_dist_for(req_to_install)
    File "c:\users\user_name\appdata\local\continuum\anaconda3\lib\site-packages\pip\_internal\resolve.py", line 221, in _get_abstract_dist_for
      req.check_if_exists(self.use_user_site)
    File "c:\users\user_name\appdata\local\continuum\anaconda3\lib\site-packages\pip\_internal\req\req_install.py", line 350, in check_if_exists
      self.req.name
    File "c:\users\user_name\appdata\local\continuum\anaconda3\lib\site-packages\pip\_vendor\pkg_resources\__init__.py", line 476, in get_distribution
      dist = get_provider(dist)
    File "c:\users\user_name\appdata\local\continuum\anaconda3\lib\site-packages\pip\_vendor\pkg_resources\__init__.py", line 352, in get_provider
      return working_set.find(moduleOrReq) or require(str(moduleOrReq))[0]
    File "c:\users\user_name\appdata\local\continuum\anaconda3\lib\site-packages\pip\_vendor\pkg_resources\__init__.py", line 895, in require
      needed = self.resolve(parse_requirements(requirements))
    File "c:\users\user_name\appdata\local\continuum\anaconda3\lib\site-packages\pip\_vendor\pkg_resources\__init__.py", line 786, in resolve
      raise VersionConflict(dist, req).with_context(dependent_req)
  pip._vendor.pkg_resources.ContextualVersionConflict: (tables 3.4.3 (c:\users\user_name\appdata\local\continuum\anaconda3\lib\site-packages), Requirement.parse('tables==3.2.0'), {'package'})
  </code></pre>