Getting a list of values from a list of dicts

I have a list of dicts like this:

[{'value': 'apple', 'blah': 2}, 
 {'value': 'banana', 'blah': 3} , 
 {'value': 'cars', 'blah': 4}]

I want ['apple', 'banana', 'cars']

Whats the best way to do this?