Op 09-06-16 om 12:53 schreef BartC: > On 09/06/2016 10:46, Antoon Pardon wrote: >> Op 09-06-16 om 09:36 schreef Steven D'Aprano: > >>> Your example demonstrates object mutation, not assignment. >> >> Generally assignment and mutation don't contradict each other. >> So IMO the cause is the same, a mutation. In some languages you >> can mutate your variable through an assignment and in others you >> can't. > > I think this is what is confusing you. > > Mutation is like repairing or customising my car. > > Full assignment is like buying a new car.
I think you are confused. Full assignment of C struct or Pascal record is the same as mutating all individual attributes. You don't get a new record/instance as in Python. You replace the value of the attributes with something else. As far a language semantics are concerned, you get the (new) car at scope entry, all assigments later are mutations. You may think of assignment as like buying a new car, that is not how the semantics of languages like pascal and C are defined. -- https://mail.python.org/mailman/listinfo/python-list
