Using PyBabel

To get all strings for translation:

pybabel extract -F babel.cfg -o ./messages.pot .

To run the po file (first time):

pybabel init -i ./messages.pot -d ./translations -l en

There is a po file for the update:

pybabel update -i ./messages.pot -d ./translations

To compile a po file for mo:

pybabel compile -f -d ./translations