Emptying the Values

Given a list of values, return a list with each value replaced with the empty value of the same type.

More explicitly:

• Replace integers (e.g. 1, 3), whose type is int, with 0
• Replace floats (e.g. 3.14, 2.17), whose type is float, with 0.0
• Replace strings (e.g. "abcde", "x"), whose type is str, with ""
• Replace booleans (True, False), whose type is bool, with False
• Replace lists (e.g. [1, "a", 5], [[4]]), whose type is list, with []
• Replace tuples (e.g. (1,9,0), (2,)), whose type is tuple, with ()
• Replace sets (e.g. {0,"a"}, {"b"}), whose type is set, with set()
  • Caution: Python interprets {} as the empty dictionary, not the empty set.
• None, whose type is NoneType, is preserved as None

Examples

empty_values([1, 2, 3]) ➞ [0, 0, 0]

empty_values([7, 3.14, "cat"]) ➞ [0, 0.0, ""]

empty_values([[1, 2, 3], (1,2,3), {1,2,3}]) ➞ [[], (), set()]

empty_values([[7, 3.14, "cat"]]) ➞ [[]]

empty_values([None]) ➞ [None]

Notes

None has the special NoneType all for itself.