en.py 文件源码

def _consume_alpha_u(self,text,offset):
        """Consume an alphabetic character from the given unicode string.

        Given a unicode string and the current offset, this method returns
        the number of characters occupied by the next alphabetic character
        in the string.  Trailing combining characters are consumed as a
        single letter.
        """
        assert offset < len(text)
        incr = 0
        if text[offset].isalpha():
            incr = 1
            while offset + incr < len(text):
                if unicodedata.category(text[offset+incr])[0] != "M":
                    break
                incr += 1
        return incr