test_bre.py 文件源码

def test_as_replace_function(self):
        """Test that replace can be used as a replace function."""

        text = "this will be fed into re.subn!  Here we go!  this will be fed into re.subn!  Here we go!"
        text_pattern = r"(?P<first>this )(?P<second>.*?)(!)"
        pattern = bre.compile_search(text_pattern)
        replace = bre.compile_replace(pattern, r'\c\g<first>is awesome\g<3>')
        result, count = pattern.subn(replace, text)

        self.assertEqual(result, "This is awesome!  Here we go!  This is awesome!  Here we go!")
        self.assertEqual(count, 2)