None :)

[Neil Schemenauer]

Hans Kristian Ruud wrote:
> When an element in a sequence s is None,
> max (s) will return None:
> 
> >>> s = [1.4, 2.5, None, 4354549999L]
> >>> max(s)
> >>>
> >>> min(s)
> 1.4

The ordering of different types is arbitrary.  In Python < 2.1
all numeric types were smaller than all other types.  In 2.1 None
is smaller than any type.

  Neil

> 
> I could'nt find anything about this particular case
> in "Learning Python" by Lutz and Ascher. Nor in the FAQ.
> 
> 
> slightly mystified
> - hans kristian -
> 
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> http://mail.python.org/mailman/listinfo/python-list