How to avoid HTTP error 429 (Too Many Requests) python

Why do I get "Pickle - EOFError: Ran out of input" reading an empty file?

Max retries exceeded with URL in requests

TypeError: Missing 1 required positional argument: "self"

What"s the bad magic number error?

pip install fails with "connection error: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:598)"