[NumPy-Tickets] [NumPy] #1667: Provide a context manager for seterr

[NumPy Trac]

#1667: Provide a context manager for seterr
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 Reporter:  warren.weckesser          |       Owner:  somebody
     Type:  enhancement               |      Status:  new     
 Priority:  normal                    |   Milestone:  2.0.0   
Component:  Other                     |     Version:  1.5.0   
 Keywords:  setterr, context manager  |  
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 It would be great if there were a context manager for the error settings.
 Something as simple as this
 {{{
 import numpy

 class ErrorSettings(object):

     def __enter__(self, **kwds):
         self.previous = numpy.seterr(**kwds)

     def __exit__(self, type, value, traceback):
         numpy.seterr(**self.previous)
 }}}
 would allow code such as this:
 {{{
 with ErrorSettings(invalid='ignore'):
     y = sin(x) / x
 }}}
 instead of
 {{{
 oldsettings = np.seterr(invalid='ignore')
 y = sin(x) / x
 np.seterr(**oldsettings)
 }}}

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Ticket URL: <http://projects.scipy.org/numpy/ticket/1667>
NumPy <http://projects.scipy.org/numpy>
My example project