Use the Design Recipe to write a function common_keys that takes a list of dictionaries and returns a set of keys that are in common in all of the dictionaries. Hints: You can get a set of keys from a dictionary by calling its keys() method: d.keys() You can compute the common keys between two dictionaries using the & operator: d1.keys() & d2.keys() produces the common set of keys between d1 and d2. This function follows an accumulation loop that is initially the keys from the first dictionary: def common_keys (lod): common = lod[e].keys() for d in lod: return common For example: Test Result {2} print (common_keys ([[1:5, 2:7}, {2:3,3:10}])) print (common_keys ([[1:5, 2:7}, {2:3,3:10}, {2:8,4:1})) {2} print (comumon_keys ([[1:5, 2:7), (3:3, 4:10), 15:8)])) set () print (common_keys ([[1: 5, 2:7, 4: 1}, {1: 5, 2:3, 3: 10}, {2 : 8, 3: 10, 4: 1}])) {2}