add new key value for every dict of dict with list of dict

I have dict of dict:

a = {
    'a': {'id': 1},
    'b': {'id': 1},
    'c': {'id': 1}
}

And list of dict:

b = [{'word': 'foo'}, {'word': 'baz'}, {'word': 'bar'}]

I need update every dict from a to every value key word from b

Example:

a = {
    'a': {'id': 1, 'word': foo},
    'b': {'id': 1, 'word': baz},
    'c': {'id': 1, 'word': bar}
}

i try do it by the next way:

[
a.update(
    {
        'word': i
    }
)
for a in a.values()
for i in [
    df['word'] for df in b
    ]
]

but i have all new keys with last word bar:

    a = {
    'a': {'id': 1, 'word': bar},
    'b': {'id': 1, 'word': bar},
    'c': {'id': 1, 'word': bar}
}

How i can solve it?

>Solution :

Use zip to iterate over a and b concurrently:

for k, d in zip(a, b):
    a[k].update(d)

Result:

{'a': {'id': 1, 'word': 'foo'}, 
 'b': {'id': 1, 'word': 'baz'},
 'c': {'id': 1, 'word': 'bar'}}

You can also use a.values() as one of the arguments to zip:

for d1, d2 in zip(a.values(), b):
    d1.update(d2)