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I am working through Miguel Grinberg's new Flask tutorial and have made it to i18n/l10n. Half this chapter had been a headache.

First, pybabel extract -F babel.cfg -k _l -o messages.pot doesn't run. All I get is: pybabel: error: no input files or directories specified

Whatever, quick Google search says: pybabel extract -F babel.cfg -k _l -o messages.pot --input-dir=. will work. It does.

I see all the files it's supposed to be extracting from in the readout.

...
extracting messages from app/routes.py
extracting messages from app/templates/404.html (extensions="jinja2.ext.autoescape,jinja2.ext.with_")
...

Alight, on to generating the language catalog. pybabel init -i messages.pot -d app/translations -l es runs without error and looks good when I open the file. I start copy/pasting translations when I notice my messages.po file is 100 lines shorter than Miguel's.

I looked closer at my version of the file and found that while pybabel may have looked into all of my files, it didn't extract anything from some.

I can only speculate that adding --input-dir=. may have changed things but I couldn't get pybabel to run without it and Googling pybabel extract babel.cfg messages.pot "no input files" returns 3 results all mentioning making that change.

For anyone familiar with the Mega Tutorial, pybabel isn't extracting anything from my base.html, _post.html, or user.html files.

desertnaut
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Nick Bonne
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1 Answers1

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I think your mistake is in the extraction command. It should be:

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

Note the dot after messages.pot. This is the directory from where pybabel needs to start scanning for files. I wasn't even aware of the --input-dir option, where did you find that? It's not listed in the pybabel documentation for the extract command.

Miguel Grinberg
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