Merge branch 'main' of github.com:dariusmilea/python3_core_interview into main

feat: some more fluent python stuff about dicts and sets

feat: more networking concepts

Update python3_core.md

Update python3_core.md

fix: mistake in demo code for decorators

feat: default python decorators

feat: sql

feat: PUT vs PATCH

fix: wrong information about ordered dict

fix: typo

feat: is operator details

fix: network subtitles

feat: networking

feat: queue, more info on mt vs mp