python 2.3's lambda behaves old fashioned

[Terry Reedy]

"Uwe Schmitt" <uwe.schmitt at procoders.net> wrote in message
news:c6r3qo$1574k$1 at hades.rz.uni-saarland.de...
> I just tried (Python 2.3)

Which did not change anything in this regard...

>     li = [ lambda x: x*a for a in range(10) ]

which, except for function __name__ and func_name attributes, translates
(unabbreviates) to

li = []
for a in range(10):
    def tem(x): return x*a
    li.append(tem)
del tem

which is equivalent to

li = []
for a in range(10):
    def tem(x): return x*__multiplier
    li.append(tem)
__multiplier = a
del a, tem

> which results in
>
>     li[0](1) = 9
>     ...
>     li[9](1) = 9

As one would expect from second translation above if not the first.

Its funny how some people expect default parameter objects to be
re-calculated on every call instead of just once, while others sometimes
expect global vars to be evaluated just once instead of on every call ;-)

The question of whether free vars within lambdas within list comps should
get 'early binding' instead of the usual late binding was discussed on
Py-Dev list last fall and some this winter.  I believe Guido recently said
no change.

Terry J. Reedy