Why or when we use (None) in code? What's the benefit in it? When compiler returns its output as (None)?

Question

The (None) section is totally confusing. I can't understand. Can anyone help me with example? Thanks in advance.

Answer 1

More importantly, a function will (most likely, if following conventions) return None when it doesn't return anything. For example:

def func():
print("I return None!")

will return None, as there is no return statement. Built-in functions, like print(), will always follow conventions.

Answer 2

Yes, setting a big object reference to None (null in Java) is a good way to explicitly reclaim memory without waiting for garbage collection.

Answer 3

You can reset a variable with setting it’s value to none.

Which basically means null in other languages.