Ismael Garrido schrieb:
Hello.
This is my code: class Node: def __init__(self, tag, value=None, **kwargs): self.tag = tag self.value = value self.kwargs = kwargs self.childs = []
def addChild(self, tag, value=None, **kwargs): node = Node(tag, value, kwargs) self.childs.append(node)
def __repr__(self):
return "Tag %s ; value %s ; kwargs %s ; childs %s" % (self.tag, self.value, self.kwargs, self.childs)
And this is what I do to test it:
>>> ppal = Node("Test", value="Test")
>>> ppal.addChild("test", value=2)
Traceback (most recent call last): File "<pyshell#75>", line 1, in -toplevel- ppal.addChild("test", value=2) File "...node.py", line 10, in addChild node = Node(tag, value, kwargs) TypeError: __init__() takes at most 3 arguments (4 given)
This means, afaik, __init__() takes at most 3 non-keyword arguments (plus an arbitrary number of keyword-arguments).
You passed 4 non-keyword - arguments, the first beeing (implicitely) self (i. e. node), and then three more: tag, value, kwargs. (In your case kwargs is the empty dictionary.)
I suppose you wanted to pass addChild's **kwargs to Node's **kwargs, which goes like this:
def addChild(self, tag, value=None, **kwargs):
node = Node(tag, value, **kwargs)
self.childs.append(node)HTH, Gregor
I don't understand. Why 4 arguments are given? What can I do to solve that?
The idea of the class is to be able to create a "tree". Where each node can have subnodes, which in turn can have their subnodes...
Thanks Ismael
_______________________________________________ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
-- Gregor Lingl Reisnerstrasse 3/19 A-1030 Wien
Telefon: +43 1 713 33 98 Mobil: +43 664 140 35 27
Autor von "Python für Kids" Website: python4kids.net _______________________________________________ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
