Counting booleans in dictionary

Question

I have a python dictionary object that contains a boolean for every key, e.g.:

d = {'client1': True, 'client2': False}

What is the easiest and most concise way to count the number of True values in the dictionary?

Answer 1

For clarity:

num_true = sum(1 for condition in d.values() if condition)

For conciseness (this works because True is a subclass of int with a value 1):

num_true = sum(d.values())