Matching Python Dict

Question

I have a dictionary that looks like...

dict1 = {'England':[1,2,3,4,5,6,7],'Canada':[1,2,3,4,5,6,7]...etc}

I also have another dictionary that looks like...

dict2 = {'England':15,'Canada':10...etc}

Im trying to do a match for the key and then append the value to dict1 so I can get something like

dict3 = {'England':[1,2,3,4,5,6,7,15],'Canada':[1,2,3,4,5,6,7,10]...etc}

so far I believe I will have to use the setdefault append method. However Im not quite sure.

Answer 1

dict1 = {'England': range(1, 8), 'Canada': range(1, 8)}
dict2 = {'England': 15, 'Canada': 10, 'France': 5}
for k, v in dict2.items():
    dict1.setdefault(k, []).append(v)

Result:

{
    'Canada': [1, 2, 3, 4, 5, 6, 7, 10], 
    'England': [1, 2, 3, 4, 5, 6, 7, 15],
    'France': [5]
}

Answer 2

Using dict comprehension:

dict3 = {k:v+[dict2[k]] for k,v in dict1.items() if k in dict2}

Results in:

{'England': [1, 2, 3, 4, 5, 6, 7, 15], 'Canada': [1, 2, 3, 4, 5, 6, 7, 10]}

I assume both dicts have matching keys, as you have not specified if some keys may not exist in dict2 for example.