The mongo-python-driver is not reproducible. As part of reproducible-builds effort, the package should be identical each and every time the package is built and it should not depend on the current build environment. A copyright message is displayed in the python driver files which depends on the current system date. This issue has been fixed to remove the dependency. Please visit the below URL for more information about reproducible-builds.

https://wiki.debian.org/ReproducibleBuilds/About