Check to see if a collection of properties exist inside a dict object in Python

Question

What is a good way to check to see if a collection of properties exist inside a dict object in Python?

Currently we are doing this, but it seems like there may be a better way:

properties_to_check_for = ['name', 'date', 'birth']
for property in properties_to_check_for:
    if property not in dict_obj or dict_obj[property] is None:
        return False

Thanks so much!

Answer 1

You can use all with a generator:

all(key in dict_obj for key in properties_to_check_for)

It'll short-circuit, just like your for loop. Here's a direct translation of your current code:

all(dict_obj.get(key) is not None for key in properties_to_check_for)

d.get(key) will return None if the key isn't in your dictionary, so you don't really need to check if it's in there beforehand.

Answer 2

You could use any():

any(dict_obj.get(prop) is None for prop in properties_to_check_for )

This will return True if any property is not found in properties_to_check_for or if it's value is None.