How to find the average of non-zero values in a Python dictionary?

You can do this by iterating over the dictionary and filtering out zero values first. Then take the sum of the filtered values. Finally, divide by the number of these filtered values. 


my_dict = {"foo": 100, "bar": 0, "baz": 200}
filtered_vals = [v for _, v in my_dict.items() if v != 0]
average = sum(filtered_vals) / len(filtered_vals)


This will give the output −


You can also use reduce but for a simple task such as this, it is an overkill. And it is also much less readable than using a list comprehension.

Updated on: 05-Mar-2020

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