Python

# Initializes an empty dictionary:
mydict = dict()
# or
mydict ={}
# Empties a dicionary:
mydict.clear()

dict_empty = {}

dict.clear()

>>> 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}

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