question about True values

[Steve Holden]

Gabriel Genellina wrote:
> At Wednesday 25/10/2006 22:29, Terry Reedy wrote:
> 
>> >> the string class's "nil" value.  Each of the builtin types has such an
>> >> "empty" or "nil" value:
>> >>
>> >>     string              ""
>> >>     list                []
>> >>     tuple               ()
>> >>     dict                {}
>> >>     int                 0
>> >>     float               0.0
>> >>     complex             0j
>> >>     set                 set()
>> >>
>> >> Any other value besides the above will compare as "not false".
>> >>
>> >
>> > And today's question for the novices is: which Python type did Skip 
>> miss
>> > from the above list?
>>
>> more that one:
>>
>> 0L
>> decimal.Decimal(0) # is decimal.Decimal('0'), also
>> u''
>> array.array('c') # or any other typecode, I suspect, without initializer
> 
> 
> Just for fun:
> buffer('')
> frozenset()
> iter(())
> xrange(0)
> 
There's still a very obvious omission ...

regards
  Steve
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