[Python-ideas] Allow lambda decorators

[Lie Ryan]

On Sun, 08 Feb 2009 18:08:25 -1000, Carl Johnson wrote:

<snip>

I can't really comprehend the feature you're describing (TLDR), but 
knowing that decorator is merely a syntax sugar for function calling to a 
function:

@lambdafunc
def func(foo): pass

is equal to

def func(foo): pass
func = lambdafunc(func)

why don't you do this instead:

lambdafunc(lambda foo: -foo)

it is perfectly readable and is a more functional approach than decorator.

Also for the first example you gave:

>>> def func_maker():
...     fs = []
...     for i in range(10):
...         def f():
...             return i
...         fs.append(f)
...     return fs

why not? (untested)

>>> from functools import partial
>>> def func_maker():
...     def f(j):
...         return j
...     fs = []
...     for i in range(10):
...         fs.append(partial(f, i))         
...     return fs
...

Closure is already confusing enough for most people. Dynamic creation of 
closure, which is allowed because of python's way of defining function is 
an abuse of closure IMHO.