Re: [Numpy-discussion] __eq__ with str and object

On Wed, May 26, 2010 at 6:11 AM, Charles R Harris wrote:

On Tue, May 25, 2010 at 2:21 PM, Michael Droettboom wrote:

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Seems like a bug to me.  Certain branches in _array_richcompare return False to fail rather than Py_NotImplemented, which means the string-understanding comparison fallbacks don't run.  Attached is a (simple) patch that resolves this bug, and doesn't seem to cause any of the unit tests to fail.  Does this make sense to someone with a better understanding of the rich comparison code than I?

Mike

On 05/25/2010 12:54 PM, Keith Goodman wrote:

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a1 = np.array(['a', 'b'], dtype=object)

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>  a2 = np.array(['a', 'b']) > >  a1 == a2

   array([ True,  True], dtype=bool)  # Looks good

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>  a2 == a1

   False  # Should I have expected this?

Could you open a ticket for this and mark it for review?

Here's the ticket: http://projects.scipy.org/numpy/ticket/1491 Mike, could you attach your fix?