y = x makes a copy of the object referred to by
x, then makes
y reference it.
Assignment copies the object
Assignment copies the reference to the object
CorrectionHere is what's right.
Variable assignment copies the reference to the object (“identity” of the object) rather than creating a copy of the object and referencing the new copy. For example:
table_tennis = Sport() ping_pong = table_tennis
The first line of the above code creates a
Sport object and stores the reference to that object in variable
table_tennis. The second line copies the reference that is stored in
table_tennis into variable
ping_pong. At the end of this code, there still is only a single
Sport object. And there are two variables,
ping_pong, that both refer to that same object.
id, that returns the “identity” of the object referred to by a variable, on both
ping_pong shows the same value.
ValueHow can you build on this misconception?
Read through Python’s tutorial on Classes to learn more.