MRAB wrote:
Ethan Furman wrote:
Robert Kern wrote:
On 2009-07-14 14:56, Dr. Phillip M. Feldman wrote:
!= does do what I want, except that it doesn't indicate to someone
reading
the code that the operands are being treated as logicals.
(Readability is
supposed to be one of the major selling points of Python). But,
this is
probably good enough.
In the words of those greater than myself, "Not every one-liner needs
to be in the standard library."
def xor(a, b):
return bool(a) != bool(b)
Let's see...
and returns the last object that is "true"
or returns the first object that is "true"
so should xor return the only object that is "true", else False/None?
def xor(a, b)
if a and b:
return None
elif a:
return a
elif b:
return b
else:
return None
How about:
def xor(a, b):
return not b and a or not a and b
In [12]: not 1 and 0 or 1 and not 0
Out[12]: True
In [13]: not 0 and 0 or 0 and not 0
Out[13]: 0
In [14]: not 1 and 1 or 1 and not 1
Out[14]: False
In [15]: not [] and [] or [] and not []
Out[15]: []
Doesn't produce consistent objects, sometimes bool, sometimes something
else. 'Course, it all depends on what you need.
~Ethan~
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