How do I create a unique value for each key using dict.fromkeys?

Question

First, I\'m new to Python, so I apologize if I\'ve overlooked something, but I would like to use dict.fromkeys (or something similar) to create a dictionary of

Answer 1

Check out defaultdict (requires Python 2.5 or greater).

from collections import defaultdict

def benchmark(input):
    ...
    return time_taken

runs = 10
inputs = (1, 2, 3, 5, 8, 13, 21, 34, 55)
results = defaultdict(list) # Creates a dict where the default value for any key is an empty list

for run in range(0, runs):
    for i in inputs:
        results[i].append(benchmark(i))