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How to update an existing messages.pot file? For example, I have translated messages.pot file:

.... #: forms.py:11 msgid "Nickname" msgstr "Имя" #: forms.py:18 msgid "Wrong email" msgstr "Неправильный пароль" ....

If I'll mark new text with selector gettext, for example:

flash(gettext('Login successful'))

and run: pybabel extract -F babel.cfg -o messages.pot
I'll receive a new messages.po file:

 .... #: forms.py:11 msgid "Nickname" msgstr "" #: forms.py:18 msgid "Wrong email" msgstr "" #: models.py:783 msgid "Login successful" msgstr "" ....

So, how can I update an existing messages.pot file, saving translated strings ("Nickname", "Wrong email")?

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19

pot file not for translations, it just list of all strings for translation without specific language.

For real translations used po - text file and mo - binary file with translations. This files will created for any languages that you need. See my files structure:

translations/ translations/ru/ translations/ru/LC_MESSAGES/ translations/ru/LC_MESSAGES/messages.mo translations/ru/LC_MESSAGES/messages.po translations/messages.pot

To get all strings for translation:

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

To init po file (first time):

pybabel init -i messages.pot -d . -l ru

To update exist po file:

pybabel update -i messages.pot -d .

To compile po file to mo:

pybabel compile -f -d .

See more in documentation.

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