Proper way to remove keys in dictionary with None values in Python

Question

What is the proper way to remove keys from a dictionary with value == None in Python?

Answer 1

You could also take a copy of the dict to avoid iterating the original dict while altering it.

for k, v in dict(d).items():
    if v is None:
        del d[k]

But that might not be a great idea for larger dictionaries.