错误信息：

File "/usr/lib/python2.7/site-packages/urllib3/util/__init__.py", line 4, in 
    
         from .request import make_headers  File "/usr/lib/python2.7/site-packages/urllib3/util/request.py", line 5, in 
     
          from ..exceptions import UnrewindableBodyErrorImportError: cannot import name UnrewindableBodyError
     
    

解决办法，重装 urllib3 库：

pip uninstall urllib3pip install urllib3