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Revision 2254

Added by Aaron Marcuse-Kubitza about 12 years ago

Compare object()-based sentinel values using is. Where sentinel values must be compared using ==, use rand.rand_int() instead.

View differences:

iters.py
1 1 
# Iterators and iterables
2 2 

  		




  
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import rand


  		




  
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def is_iterable(value): return getattr(value, '__iter__', False)


  		




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# Sentinel to use in iter() if function return value should be ignored


  		




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iter_end = object()


  		




  
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# Sentinel to use in iter() if function return value should be ignored.


  		




  
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# Can't use object() because iter() compares sentinel using ==.


  		




  
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iter_end = rand.rand_int()


  		




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def func_iter(func):


  		




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    '''Used to iterate a generating function which raises StopIteration instead


  		












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