lists in python

i want each element of B_list to be A_list - 5

import random

#A list = 20 random number eg (5,15,34,50,....) A=20 A_list=[] for i in range (A): c=random.randrange(0,50,1) A_list.append(c) print(A_list)

#B_list should = A list - 5 #eg : if A_list = (10,20,30) #B_list should be (5, 15, 25) B_list=[] for i in range(A): c=([i]in A_list)-5 B_list.append(c) print(B_list)