[Python-Dev] Definining properties - a use case for class decorators? (original) (raw)

Phillip J. Eby pje at telecommunity.com
Wed Oct 19 22:15:33 CEST 2005

At 12:46 PM 10/19/2005 -0700, Josiah Carlson wrote:

skip at pobox.com wrote: > >>>>> "Phillip" == Phillip J Eby <pje at telecommunity.com> writes: > > Phillip> Not unless the tuple is passed in as an abstract syntax tree or > Phillip> something. > > Hmmm... Maybe I misread something then. I saw (I think) that > > type Foo (base): > def init(self): > pass > > would be equivalent to > > class Foo (base): > def init(self): > pass > > and thought that > > function myfunc(arg1, arg2): > pass > > would be equivalent to > > def myfunc(arg1, arg2): > pass > > where "function" a builtin that when called returns a new function.

For it to work in classes, it would need to execute the body of the class, which is precisely why it can't work with functions.

Not only that, but the '(arg1, arg2)' for classes is a tuple of values, but for functions it's just a function signature, not an expression! Which is why this would effectively have to be a macro facility.

More information about the Python-Dev mailing list