a = {
'x' : 1,
'y' : 2,
'z' : 3
}
b = {
'w' : 10,
'x' : 11,
'y' : 2
}
Find keys in common
a.keys() & b.keys() # { 'x', 'y' }
Find keys in a that are not in b
a.keys() - b.keys() # { 'z' }
Find (key,value) pairs in common
a.items() & b.items() # { ('y', 2) }
