Concat only values in list of dictionary

I’d like to concat only values for list of dict.

Input :

a = [
    {'class': 'A', 'number': '1'}, 
    {'class': 'B', 'number': '2'},
    {'class': 'C', 'number': '3'},
]

Expected Output:

b = [
    'A.1',
    'B.2',
    'C.3'
] 

Is there 1 line statement for this?

>Solution :

This code can do it easily and also ensure to join all the values of the dictionary.

[".".join(i.values()) for i in a]
# result:
['A.1', 'B.2', 'C.3']