third_party/pypy/_sre.py
def subn(self, repl, string, count=0):
        """Return the tuple (new_string, number_of_subs_made) found by replacing
        the leftmost non-overlapping occurrences of pattern with the replacement
        repl."""
        return self._subx(repl, string, count, True)
def subn(self, repl, string, count=0):
        """Return the tuple (new_string, number_of_subs_made) found by replacing
        the leftmost non-overlapping occurrences of pattern with the replacement
        repl."""
        return self._subx(repl, string, count, True)
Return the tuple (new_string, number_of_subs_made) found by replacing
        the leftmost non-overlapping occurrences of pattern with the replacement
        repl.