need for help

Rob Day robert.day at merton.oxon.org
Fri Mar 1 20:41:24 CET 2013


It looks like you're using single underscores, not double: the methods
should be __init__ and __str__.

On 1 March 2013 18:35, leonardo selmi <l.selmi at icloud.com> wrote:
> hi guys
>
> i typed the following program:
>
> class ball:
>     def _init_(self, color, size, direction):
>         self.color = color
>         self.size = size
>         self.direction = direction
>
>     def _str_(self):
>         msg = 'hi, i am a ' + self.size + ' ' + self.color + 'ball!'
>         return msg
>
> myball = ball('red', 'small', 'down')
> print my ball
>
> BUT I GOT THIS ERROR:
>
> Traceback (most recent call last):
>   File "/Users/leonardo/Documents/ball2.py", line 11, in <module>
>     myball = ball('red', 'small', 'down')
> TypeError: this constructor takes no arguments
>
> can you kindly tell me what is wrong?
> thanks a lot!
> --
> http://mail.python.org/mailman/listinfo/python-list



--
Robert K. Day
robert.day at merton.oxon.org



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