On Fri, Dec 16, 2011 at 2:32 AM, Peter Otten <__pete...@web.de> wrote: > Ulrich wrote: > >> if I replace it to >> def attributelist(self): >> # find all attributes to the class that are of type numpy >> arrays: >> return [attr for attr in dir(self) if >> isinstance(getattr(self, attr), numpy.ndarray)] >> >> it crashes going into some kind of endless loop. >> >> Do you happen to have any idea? > > dir(self) finds an attribute named "attributelist", getattr(self, > "attributelist") then tries to calculate the value of that attribute, > invokes dir(self) which finds an attribute named "attributelist" and so on > ad infinitum or the stack overflows. Try (untested) > > @property > def attributelist(self): > return [attr for attr in dir(self) if attr != "attributelist" and > isinstance(getattr(self, attr), numpy.ndarray)] > > to avoid the infinite recursion.
Or remove attributelist from the class (it feels more like a generic function than a class property to me) or make it a method instead of a property. -- http://mail.python.org/mailman/listinfo/python-list
