I need help understanding a program structure using classes

[BashBedlam]

Yes you can put them in a module and call them in your class file.
If you use:

import checkhandfunctions

Then you'll have to call the functions like this:

checkhandfunctions.checkforpair (hand)

If you use:

import checkhandfunctions as chf

Then you'll have to call the functions like this:

chf.checkforpair (hand)

And if you use:

from checkhandfunctions import *

Then you'll have to call the functions like this:

checkforpair (hand)

Got it?