Hello all,
I downloaded some code accompanying the book "Programming the Semantic
Web." This question is not Semantic Web related and I doubt that one needs to
know anything about the Semantic Web to help me with this. It's the first
code sample in the book, I'm embarrassed to say. I have the code shared here
(just one file, not the majority of the book or anything):
http://pastebin.com/e870vjYK
OK, Eclipse with PyDev doesn't like this first line, with the function:
def add(self, (sub, pred, obj)):
It complains about the parentheses just before sub. Simply removing them just
moves me down to another error. I did try using python 3.x (3.4 to be
specific), which meant changing print statements to function calls. Of course,
that didn't fix the errors I was mentioning. The text uses python 2.7.x.
There are other places where I thought that there were too many parentheses and
I tried removing one set of them. For example this snippet here:
def remove(self, (sub, pred, obj)):
"""
Remove a triple pattern from the graph.
"""
triples = list(self.triples((sub, pred, obj)))
Are the two sets parentheses needed after self.triples? That syntax is
confusing to me. It seems that it should be
triples = list(self.triples(sub, pred, obj))
The full listing is here: http://pastebin.com/e870vjYK
I agree with the authors that python is a fun and easy language to use, thus it
is strange that I am getting stuck here.
Thanks,
Bruce
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