Is requests[security] required for python 3.5+ ?

[Thomas Nyberg]

Hello,

I'm trying to understand whether requests[security] or just plain 
requests should be installed for python 3.5. I.e. do the following 
packages need to be installed: pyOpenSSL, cryptography,	idna.

The reason I'm asking is because I'm moving an application to python 3 
and I am testing out which requirements continue to be required in the 
version.

Thanks for any info.

Cheers,
Thomas