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the class problem

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  the class problem contro opinion <contropinion@gmail.com> - 2012-12-31 14:34 +0800
    Re: the class problem Tim Roberts <timr@probo.com> - 2013-01-01 11:31 -0800

#35835 — the class problem

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here is my haha  class
class  haha(object):
  def  theprint(self):
    print "i am here"

>>> haha().theprint()
i am here
>>> haha(object).theprint()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: object.__new__() takes no parameters

why   haha(object).theprint()  get wrong output?

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#35912

contro opinion <contropinion@gmail.com> wrote:
>
>here is my haha  class
>class  haha(object):
>  def  theprint(self):
>    print "i am here"
>
>>>> haha().theprint()
>i am here
>>>> haha(object).theprint()
>Traceback (most recent call last):
>  File "<stdin>", line 1, in <module>
>TypeError: object.__new__() takes no parameters
>
>why   haha(object).theprint()  get wrong output?

It doesn't -- that's the right output.  What did you expect it to do?

The line "class haha(object)" says that "haha" is a class that happens to
derive from the "object" base class.  The class is still simply called
"haha", and to create an instance of the class "haha", you write "haha()".
-- 
Tim Roberts, timr@probo.com
Providenza & Boekelheide, Inc.

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