Extract doesn't work with long spliced strings in parentheses

[AiroPi]

Overview Description

There is some ways to write long strings in python, one is to use multiple strings in parentheses without any operator between the strings.

Steps to Reproduce

_((
    "This is a very long string that should be split into multiple lines.\n"
    f"This is a very long string that should be split into multiple {}."
), 'lines')

pybabel extract test.py -o test.pot

Actual Results

Nothing except the headers in test.pot

Expected Results

#: test.py:1
msgid ""
"This is a very long string that should be split into multiple lines.\n"
"This is a very long string that should be split into multiple lines."
msgstr ""

[AiroPi]

Or I could just remove the inner parentheses...