Error when creating class

[flaviostz]

Hi,

I wrote this small program:

class Simples:


def minha_func (valor1, valor2):
return valor1 - valor2


mf = Simples()

x = mf.minha_func(2 , 3)

print x


But when I try execute it, python interpreter gives me this error:

>>Traceback (most recent call last):

File "/tmp/py91849hI", line 11, in <module>
x = mf.minha_func(2 , 3)
TypeError: minha_func() takes exactly 2 arguments (3 given)


Please, help me with this issue.

Thanks,

Flávio

[Diez B. Roggisch]

Re: Error when creating class

flaviostz schrieb:

Hi,
>
I wrote this small program:
>
class Simples:
>
>
def minha_func (valor1, valor2):
return valor1 - valor2
>
>
mf = Simples()
>
x = mf.minha_func(2 , 3)
>
print x
>
>
But when I try execute it, python interpreter gives me this error:
>

>>>Traceback (most recent call last):

File "/tmp/py91849hI", line 11, in <module>
x = mf.minha_func(2 , 3)
TypeError: minha_func() takes exactly 2 arguments (3 given)
>
>
Please, help me with this issue.

You need to declare minha_func with an explicit self-parameter as first
argument. That's the way python passes the instance to methods.

Consult the tutorial:

http://www.python.org/doc/2.5.2/tut/node11.html

Diez