How to initialize a dict with keys from a list and empty value in Python?
dict.fromkeys([1, 2, 3, 4])
This is actually a classmethod, so it works for dict-subclasses (like collections.defaultdict) as well. The optional second argument specifies the value to use for the keys (defaults to None.)
nobody cared to give a dict-comprehension solution ?
>>> keys = [1,2,3,5,6,7]>>> {key: None for key in keys}{1: None, 2: None, 3: None, 5: None, 6: None, 7: None}