Merge pull request #830 from alibaba-damo-academy/dev_ts

Xian Shi

2023-08-10 e2b3edec45fe1bfd76493acc366df971e89e7ae2

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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)