Merge pull request #513 from alibaba-damo-academy/for-html5-demo

zhifu gao

2023-05-16 6fa45b7fdbe850b9da2f8baf68fbc3f5d1785b88

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# -*- coding: utf-8 -*-
 
 
try:
    strtype = basestring
except NameError:
    strtype = str
 
 
def to_s(val):
    try:
        return unicode(val)
    except NameError:
        return str(val)