You want to improve MapProxy, found a bug and want to fix it? Great! This document points you to some helpful information.
The main (authoritative) repository is hosted at https://github.com/mapproxy/mapproxy
To get a copy of the repository call:
git clone https://github.com/mapproxy/mapproxy
We use Travis-CI to automatically run the MapProxy test suite against different Python versions. The test results can be found here. Travis-CI is connected with our GitHub repository and the integration tests are run for each commit and pull-request.
There is a whole chapter about development in the documentation. It covers most aspects of the MapProxy development including the source code, documentation, tests, etc.