ssl.SSLError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:749)

1. 현상 : urllib.request.urlopen 사용시 아래 error 발생

ssl.SSLError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:749)

2. 개발환경 : Mac OSX, python 3.6 

3. 해결 

$ /Applications/Python\ 3.6/Install\ Certificates.command -- pip install --upgrade certifi Collecting certifi Downloading certifi-2017.1.23-py2.py3-none-any.whl (382kB) 100% |████████████████████████████████| 389kB 849kB/s Installing collected packages: certifi Successfully installed certifi-2017.1.23 -- removing any existing file or link -- creating symlink to certifi certificate bundle -- setting permissions -- update complete