• QuestionStaticmethod

• $ python Python 2.5.1 (r251:54863, Jun 25 2007, 14:55:49) [GCC 3.4.4 (cygming special) (gdc 0.12, using dmd 0.125)] on cygwin Type "help", "copyright", "credits" or "license" for more information.

  >>>

x = 'abc' expect = 'abcabcabc'

class C(object):

• def f(x):
  • return x*3

  call = staticmethod(f)

assert expect == C()(x) # works great

• # straightforward from docs

E = type('E',(object,),dict(call=staticmethod(C.call)))

assert expect == E()(x) # works great, why must I

• # repeat staticmethod?

def f(x):

• return x*3

class G(object):

• call = staticmethod(f)

assert expect == G()(x) # works great, works as I expect

# My opportunity to make a static method has passed?

I = type('I',(C,),dict(call = staticmethod(C.f)))

try:

• assert expect == I()(x)

except TypeError,info: # I don\'t understand.

• assert info.message.startswith('unbound method f()')

# Staticness lost?

F = type('F',(object,),dict(call=C.call))

try:

• assert expect == F()(x)

except TypeError,info: # misunderstood,

• assert info.message.startswith('f() takes exactly 1 argument (2 given)')

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