Seems like this is not a tweepy issue, rather it is a windows issue.
https://support.microsoft.com/en-us/kb/2525435
The issue state that the issue is with the C runtime libraries and visual studio.
python setup.py install
must be trying to compile some cython code inside tweepy
- which may be needed for performance issues. And while compiling this, it is using the conflicting C runtime library.
The link above explains a method to change registry keys necessary to fix this issue - but I personally hate registry edits, and prefer either:
- Uninstall all versions of Visual Studio and C runtume libraries and reinstall them
OR
- Use python compiler for microsoft (http://www.microsoft.com/en-in/download/details.aspx?id=44266) which will install a C compiler specifically for cython. This will have it's own command prompt - use this command prompt to run
python setup.py install
. The command prompt is good because it sets paths and environment variables correctly for you to avoid weird problems like this.