I work very hard to have tools reject pull requests as much as possible. For python I am making good use of https://github.com/landscapeio/prospector https://g

I work very hard to have tools reject pull requests as much as possible. For python I am making good use of https://github.com/landscapeio/prospector https://github.com/landscapeio/prospector to enforce pep257 and pep8 compliance. It also catches a lot of things (through pylint and frosted/flake8) that humans often do not, such as unused variables. The advantage is that tools reject the pull request, and not a person. It doesn't harm ego to be rejected by a tool.