[Tutor] Basic question -> How to use a class from a file?
Rich Krauter
rmkrauter at yahoo.com
Mon Jan 3 04:45:23 CET 2005
Bernard Lebel wrote:
> Okay here comes the next question.
>
> In that class, I have 3 functions. Actually, one of them calls the two
> others.
>
> However when I call these functions (wich are placed before the caller
> in the file), I get an error saying that the global name x (the function
> name) is not defined.
>
> What am I doing wrong?
>
>
Hi Bernard,
This is just a guess since you didn't post your code, but did you call
the 'bare' methods in your class definition, rather than calling the
methods through an instance (which is usually called 'self' inside class
definitions)?
I think the following may be similar to what you wanted to do:
class A(object):
def __init__(self,data=None):
self.data = data
def methodA(self):
self.methodB()
self.methodC()
def methodB(self):
print "in methodB"
print self.data
def methodC(self):
print "in methodC"
print self.data
if __name__ == '__main__':
a1 = A(5)
a1.methodA()
a2 = A([1,2,3])
a2.methodA()
Hope this helps.
Rich
More information about the Tutor
mailing list