staticmethod and __call__

[Bruce Eckel]

I seem to have trouble getting __call__ to behave as a static
method:

class Item:
  def f(): print 'An Item'

Item.a = 'a'
Item.b = 'b'
Item.c = 'c'

class ItemGenerator:
  import random
  rgen = random.Random()
  items = [j for j in vars(Item).values() if isinstance(j, Item)]
  def __call__():
    return ItemGenerator.rgen.choice(ItemGenerator.items)
  __call__ = staticmethod(__call__)

items = [ItemGenerator() for i in range(5)]
for i in items:
  i.f()

Output:
Traceback (most recent call last):
  File "test.py", line 18, in ?
    i.f()
AttributeError: ItemGenerator instance has no attribute 'f'

It doesn't seem to be making the __call__


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