Python: PIP installing two codegen projects isn't working.

Description

This might be more of a question I'm looking to implement two swagger codegen'd projects into
my project since I need access to both api's when I try and pip install the second api it returns the following:

Requirement already satisfied: six>=1.10 in ./venv/lib/python3.6/site-packages/six-1.11.0-py3.6.egg (from swagger-client==1.0.0)
Requirement already satisfied: certifi in ./venv/lib/python3.6/site-packages (from swagger-client==1.0.0)
Requirement already satisfied: python-dateutil in ./venv/lib/python3.6/site-packages/python_dateutil-2.7.0-py3.6.egg (from swagger-client==1.0.0)

Swagger-codegen version

version: 2.3.1

Command line used for generation

• MacOS HIgh Sierra 10.13.2
• Python 3.6.2
• venv
• code gen done via command line

Steps to reproduce

1. generate code using cli
2. host it on bitbucket
3. install first one no problem
4. repeat steps one and two
5. fails on second pip install

Start by reproducing the command-line generation and both pip installs on macOS High Sierra with Python 3.6.2 and a venv. The report does not include the second-install error, generated package details, or a file/test to inspect; completion would require identifying that failure and confirming that two generated projects can be installed together.