python - How to empty out elements of two arrays after merging two arrays together -

#function def merge_array(a, b):      c = []      in a:         c.append(i)      z in b:         if z not in c:             c.append(z)      c.sort()      return c  #main = [1,5,2,8,9] b = [8,4,2,8,10,3,14]  print("array 1: {}".format(a)) print("array 2: {}".format(b)) print("merged list: {}".format(merge_array(a, b)))  print("array 1 empty: {}".format(a)) print("array 2 empty: {}".format(b)) 

tried putting a.pop() , b.pop() in loops not erase elements , changes 'c'

not quite sure if looking if want add lists , take care of duplicates try:

list(set(a+b))