list.count (x): Returns the number of times specified element x appears in the list
set (list): The list type variable into set types, remove duplicates
dick: save key-value pairs
= X [1,2,2,3,3 ] S1 = SET (X) # set free duplicate values D1 = {} for I in S1: D1 [I] = x.count (I) # COUNT function print (D1) # {. 1:. 1, 2: 2,. 3: 2}