[Python] AttributeError: 'X509' object has no attribute '_x509'

Troubleshooting steps

@檢查openssl 檔案

$ python -c 'import OpenSSL; print(OpenSSL.__version__)' 0.13.1 

$ python --version Python 2.7.10 

$ sw_vers ProductName: Mac OS X ProductVersion: 10.11.5 BuildVersion: 15F34

@重新安裝requests

sudo pip uninstall pyopenssl cryptography requests 

sudo pip install requests