Window10+Anaconda3+pip update 오류 해결

pip install --upgrade pip 시 아래와 같은 에러가 

pip is configured with locations that require TLS/SSL, however the ssl module in Python is not available.

Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError("Can't connect to HTTPS URL because the SSL module is not available.")': /simple/pip/

Window10 시스템환경에서 환경 변수에 아래 경로와 같이 추가

Sample)

C:\Anaconda3; C:\Anaconda3\Scripts; C:\Anaconda3\Library\bin

참고 URL

https://stackoverflow.com/questions/45954528/pip-is-configured-with-locations-that-require-tls-ssl-however-the-ssl-module-in