On 12/21/11 3:15 PM, Nathan Rice wrote:
Incidentally, displaying an ElementwiseProxy instance doesn't go down well with iPython:In [1]: from elementwise import * In [2]: e = ElementwiseProxy(['one','two','three']) In [3]: e Out[3]: ERROR: An unexpected error occurred while tokenizing input The following traceback may be corrupted or invalid The error message is: ('EOF in multi-line statement', (6, 0))I love IPython, but it has had known problems with iterators for years. A long time ago, I agonized over what I thought was a bug in my code where itertools.count would skip numbers in IPython, but my unit tests all passed. Everything should work fine if you tuple() it first.
This is a different problem, actually. The problem is that the recently added (by me, actually) pretty-printing system tries to dispatch based on the type. In order to handle old-style classes, it checks for the type using .__class__ first. ElementProxy's __getattribute__() gets in the way here by returning a generator instead of the ElementProxy class.
-- Robert Kern "I have come to believe that the whole world is an enigma, a harmless enigma that is made terrible by our own mad attempt to interpret it as though it had an underlying truth." -- Umberto Eco -- http://mail.python.org/mailman/listinfo/python-list
