[EMAIL PROTECTED] wrote:
>
> [cut]
>>
>> Without a better example or explanation of what you are trying to do
>> it is difficult
>
> You're right.
> Actually i'm parsing an xml file using pyrxp, which returns something
> like this:
> (tagName, attributes, list_of_children, spare)
> Where list_of_children might "be a list with elements that are 4-
> tuples or plain strings".
>
> In other terms, if I have something like this:
> ('<tagA><tagB>bobloblaw</tagB></tagA>')
> it's parsed like this:
> ('tagA', None, [('tagB', None, ['bobloblaw], None)], None)...
>
> Fact is that my xml is much more deep... and I'm not sure how to
> resolve it
>
Probably you want some sort of visitor pattern.
e.g. (warning untested pseudo code ahead)
def walkTree(tree, visitor):
tag, attrs, children, spare = tree
fn = getattr(visitor, 'visit_'+tag, None)
if not fn: fn = visitor.visitDefault
fn(tag, attrs, children, spare)
for child in children:
if isinstance(child, tuple):
walktree(child, visitor)
else:
visitor.visitContent(child)
class Visitor:
def visitDefault(self, t, a, c, s): pass
def visitContent(self, c): pass
... then when you want to use it you subclass Visitor adding appropriate
visit_tagA, visit_tabB methods for the tags which interest you. You walk
the tree, and store whatever you want to save in your visitor subclass
instance.
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