ext.py 文件源码

def test_extract(self):
        from jinja2.ext import babel_extract
        source = BytesIO('''
        {{ gettext('Hello World') }}
        {% trans %}Hello World{% endtrans %}
        {% trans %}{{ users }} user{% pluralize %}{{ users }} users{% endtrans %}
        '''.encode('ascii')) # make python 3 happy
        assert list(babel_extract(source, ('gettext', 'ngettext', '_'), [], {})) == [
            (2, 'gettext', u'Hello World', []),
            (3, 'gettext', u'Hello World', []),
            (4, 'ngettext', (u'%(users)s user', u'%(users)s users', None), [])
        ]