Can i install python on your server ?
no
It’s shared hosting. You cannot install any server software on any shared hosting service. The definition of shared hosting is that the server is shared among multiple customers, so only the server operator can install server software on it.
Yes, all social network APIs are blocked due to spam coming from InfinityFree servers.
Means i can not use “login with facebook or google” button on my website ?
i don’t know exactly