Python

d = dict()
d = {}

>>> 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}

#Create a dictionary with a set of keys without any values
key_list = [1,2,3,4,5]
w_dict = dict(zip(key_list, [None]*len(key_list)))
print(w_dict)

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