I'd like to find the matching values in List 1 and List 2. - Python

>>> List1 = [{'id':1}, {'id':2}, {'id':3 }, {'id':4}]
>>> List2 = [{'id':1}, {'id':4}]
>>> intersection_items = set([item['id'] for item in List1]) & set([item['id'] for item in List2]) # Find the intersection (equal value) in the dictionary of the two lists. 
>>> list(map(lambdai:i*2, intersection_items)) # Apply a function that multiplies the items of the intersection by 2.