any way get ltm pool member configuration with single rest api request instead of one by one

I don't know in python, but with the Java SDK, there is a method to get the members of an array of pools :

String pool[]=new String[20] ; //Your array of pool here
 
CommonAddressPort PoolMember[][]==icInterfaces.getLocalLBPool().get_member_v2(pool) ; 

So maybe there is something similar in python.