What happens if you deep-copy dictionary to itself?

Question

I just saw some code that says data = copy.deepcopy(data).

• Does this work?
• What happens here?

Answer 1

It will allocate new memory for the data. Try run this snippet code

import copy

data = [1, 2, 3, 4]
print(hex(id(data)))
data = copy.deepcopy(data)
print(hex(id(data)))

Different memory address will be printed.