How to install python3 and pip3?

Question

Python

OS - Centos 7
yum install python3-pip -y #тут все ок

pip3 install requests
WARNING: Running pip install with root privileges is generally not a good idea. Try `pip3 install --user` instead.
Collecting requests
  Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:877)'),)': /simple/requests/
  Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:877)'),)': /simple/requests/
  Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:877)'),)': /simple/requests/
  Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:877)'),)': /simple/requests/
  Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:877)'),)': /simple/requests/
  Could not fetch URL https://pypi.python.org/simple/requests/: There was a problem confirming the ssl certificate: HTTPSConnectionPool(host='pypi.python.org', port=443): Max retries exceeded with url: /simple/requests/ (Caused by SSLError(SSLError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:877)'),)) - skipping
  Could not find a version that satisfies the requirement requests (from versions: )
No matching distribution found for requests

Under another user other than root, the same picture. I did not connect any additional raps.

Answer 1

Use pyenv (don't forget to install the libraries ).
To install pyenv curl https://pyenv.run | bash
Install Python pyenv install 3.8.1
Make it the default interpreter pyenv global 3.8.1, but you don’t need to do this, but you need to create virualenv and work in it so as not to break the system.
And there is a win-win option - to run Python in Docker.