Error when trying to pass list into function.
Bruno Desthuilliers
bdesth.quelquechose at free.quelquepart.fr
Mon Apr 2 15:28:20 EDT 2007
erikcw a écrit :
> Hi,
>
> I'm getting the following error when I try to pass a list into a
> function.
>
> My List: crea =[(u'218124172', u'536', u'32394'), (u'218320282',
> u'1323', u'77931')]
>
> Traceback (most recent call last):
> File "wa.py", line 118, in ?
> curHandler.walkData()
> File "wa.py", line 49, in walkData
> self.results[parent][child]['results'] = self.calculate(crea)
> #pass in list of tuples
> TypeError: calculate() takes exactly 1 argument (2 given)
>
> def calculate(dta):
> #stub
>
> How can I make this work?
In Python, the first argument of an instance method is the instance on
which it has to operate [1]. IOW, your problem is with the definition of
calculate(). You want:
class DontKnowWhat(object):
def calculate(self, data):
# code here
[1] you don't have to pass this argument - this will be handled by
Python - but you need to declare it.
HTH
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