Beginner's question - class definition
Tim Peters
tim.one at home.com
Mon Jan 15 16:39:00 EST 2001
> Can anyone explain please why the following definition ( from the
> Python documentation)
>
> class Complex:
> def _init_(self, realpart, imagpart):
> self.r = realpart
> self.i = imagpart
>
> ... [doesn't work] ...
A class constructor's name is "__init__", not "_init_". That is, you're
missing an underscore on each side. Try this:
>>> class Complex:
def __init__(self, realpart, imagpart):
self.r = realpart
self.i = imagpart
>>> Complex(1,2)
<__main__.Complex instance at 00B3970C>
>>>
easy-mistake-to-make-once-but-hard-to-make-twice-ly y'rs - tim
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