Shortcuts designed for CLI are just to "be more mnemonic" have to be considered with caution.

If gettext is a package, it means the whole python community shoud agree on that.
msgfmt is part of gettext, so yes, python -m gettest.msgfmt is the best long lasting command. Or it could be 'python -m gettest msgfmt'.

If you're using CLI, 90% of chances you know that if you don't like "python -m gettest.msgfmt" because it's too long, you can add a `alias dotrans='python -m gettest.msgfmt'` in your .bashrc so that you can simply write "dotrans Something".