Michael Torrie <torr...@gmail.com> writes:
> Basically, don't use a lambda. Create a real, local closure with a
> nested def block. That way the closure is created every time the
> parent function is called.
Nope. I explained the real problem quite clearly, and it's to do with
the difference between binding and assignment.
What's the difference between these two pieces of code?
## First
def __init__(self):
for n, v in props:
setattr(Person, '_' + n, v)
setattr(Person, n, lambda self: getattr(self, '_' + n))
## Second
def __init__(self):
for n, v in props:
setattr(Person, '_' + n, v)
def hack(self): return getattr(self, '_' + n)
setattr(Person, n, hack)
> Lambda expressions are only ever compiled once during execution.
The same is true of `def' bodies.
-- [mdw]
--
http://mail.python.org/mailman/listinfo/python-list
