[NumPy-Tickets] [NumPy] #1594: numpy.dtype('float64') == None returns True

NumPy Trac numpy-tickets@scipy....
Thu Aug 26 11:03:23 CDT 2010


#1594: numpy.dtype('float64') == None returns True
-------------------------------+--------------------------------------------
 Reporter:  Zbyszek_Szmek      |       Owner:  somebody
     Type:  defect             |      Status:  new     
 Priority:  normal             |   Milestone:  2.0.0   
Component:  Other              |     Version:  devel   
 Keywords:  dtype, comparison  |  
-------------------------------+--------------------------------------------
 Automatic dtype conversion is performed when dtype object is compared with
 something of different class. A special case is that None is converted to
 the default dtype.

 This result in surprising behavior when comparing with None:
 >>> numpy.dtype('float64') == None
 True
 >>> numpy.dtype('float32') == None
 False

 This behaviour is present in numpy at least 1.3.0 - 1.5.0.

-- 
Ticket URL: <http://projects.scipy.org/numpy/ticket/1594>
NumPy <http://projects.scipy.org/numpy>
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