can't pass the phase "python setup.py develop"

[Crayon277]

log as follow

Processing dependencies for reddit-place==0.0
Searching for r2
Reading https://pypi.python.org/simple/r2/
Couldn't find index page for 'r2' (maybe misspelled?)
Scanning index of all packages (this may take a while)
Reading https://pypi.python.org/simple/
No local packages or download links found for r2
error: Could not find suitable distribution for Requirement.parse('r2')

[DigDeeply]

This is a Plugin for reddit. You should install reddit first.

https://github.com/reddit/reddit
It has the r2 module:
https://github.com/reddit/reddit/tree/master/r2