jwt 解析token

报错：ImportError: cannot import name 'smart_text' from 'django.utils.encodin

解决：将 smart_test --》 smart_str 

报错：ImportError: cannot import name 'ugettext_lazy' from 'django.utils.translation'

解决：

# from django.utils.translation import ugettext as _
from django.utils.translation import gettext_lazy as _