python left outer join and right outer join of dictonaries

left_right_outer_join_dict.py

d1={"foo": 3, "baz": -1, "bar": 5}
d2={"foo": 3, "ven": 10, "bar": 5}
d_1_2= dict(list(d1.items()) + list(d2.items()))

dict([[k, d2.get(k, 0)] for k in d_1_2] )#right outer join
dict([[k, d1.get(k, 0)] for k in d_1_2] )#left outer join