Python - intersection between a list and keys of a dictionary

Question

I have a list that looks like this:

l1 = [\'200:200\', \'90:728\']

I have a dictionary that looks like this:

d1 = {\'200:20         


        

Answer 1

You can use a list comprehension in the dict constructor:

result = dict([(k,d1[k]) for k in l1 if k in d1])

If you're worried about removing duplicate keys, make l1 into a set first:

result = dict([(k,d1[k]) for k in set(l1) if k in d1])