A = {'a': 11, 'b': 22}
B = {'c': 48, 'd': 13,"a":13}
A.update(B)
print(A)
#{'a': 13, 'b': 22, 'c': 48, 'd': 13}A = {'a': 11, 'b': 22,"c":66}
B = {'c': 48, 'd': 13,"a":13}
B.update(A)
print(B)
#{'c': 66, 'd': 13, 'a': 11, 'b': 22}