Anonymous functions (and classes)

[logistix]

>
> I would like to be able to define anonymous functions and classes by
> omitting the function or class name normally found after the def or
> class keyword. For example, the following two function definitions would
> be equivalent:
>

That's why god created nested scopes (or one of the reasons at least):

>>> def factory():
...  def foo():
...   print "bar"
...  class bar:
...   def foo(self):
...    print "baz"
...  instance = bar()
...  return foo, instance
...
>>> a,b = factory()
>>> a()
bar
>>> b.foo()
baz
>>> foo()
Traceback (most recent call last):
  File "<interactive input>", line 1, in ?
NameError: name 'foo' is not defined
>>> x = bar()
Traceback (most recent call last):
  File "<interactive input>", line 1, in ?
NameError: name 'bar' is not defined
>>>


And if you want to clobber factory() from the namespace:

>>> del factory
>>> factory()
Traceback (most recent call last):
  File "<interactive input>", line 1, in ?
NameError: name 'factory' is not defined