About this question
I want to install psycopg2 v2.4.1 particularly. However I have done a mistake.
Pip install psycopg2
Rather than
Pip install osycopg2==2.4.1
This installed 2.4.4 rather than the earlier version.
Now after I pip uninstall psycopg2 and try to reinstall with the right version, it shows that pip re-uses the cache it downloaded initially.
How to force pip to wipe the downloaded cache and utilize the certain version that is in the command?