Merge pull request #345 from alibaba-damo-academy/dev_tmp

hnluo

2023-04-13 5563b28a74d2058c1d7c0c79f816b9cc5eb5295a

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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)