[EMAIL PROTECTED] wrote:
> Hello all.
>
> On page 479, the 2nd edition of the "Learning Python" book, this code
> appears
>
> class Derived(Base):
> def __init__(self, arg, *args, **kw):
> self.__init__(self, *args, **kw)
>
> Surely self.__init__ should be
>
> Base.__init__
>
> Everything else in the book has been crystal clear. Up to page 479!
> It doesn't appear in the errata. What am I misunderstanding?
Seems to be a typo:
Python 2.4.2 (#1, Jan 23 2006, 21:24:54)
[GCC 3.3.4] on linux2
Type "help", "copyright", "credits" or "license" for more
information.
>>> class A(object):
... def __init__ (self):
... print 'Constructing A'
...
>>> class B(A):
... def __init__ (self):
... self.__init__ (self)
...
>>> B()
Traceback (most recent call last):
File "<stdin>", line 1, in ?
File "<stdin>", line 3, in __init__
TypeError: __init__() takes exactly 1 argument (2 given)
>>> class C(A):
... def __init__ (self):
... A.__init__ (self)
...
>>> C()
Constructing A
<__main__.C object at 0x402cf5ac>
Mel.
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