Paul Rubin schrieb: > Lambda <stephenh...@gmail.com> writes: >> When I run it, it says "TypeError: unhashable instance" >> >> It looks like I can't use the new class object as the dictionary key. >> What should I do? > > You have to add a __hash__ method. Untested: > > def __hash__(self): return (self.term, self.doc_freq) > > is probably the easiest.
The __hash__ function must return an integer: >>> class Hash(object): ... def __hash__(self): ... return (1, 2) ... >>> hash(Hash()) Traceback (most recent call last): File "<stdin>", line 1, in <module> TypeError: an integer is required >>> class Hash(object): ... def __hash__(self): ... return hash((1, 2)) ... >>> hash(Hash()) 3713081631934410656 Christian -- http://mail.python.org/mailman/listinfo/python-list
