add check for local models

雾聪

2023-06-26 7fbb56719b4c9b0f85e1ca095a2ae2fe401a7b2d

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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)