What's more pythonic?

[Dan Stromberg]

Is sample1 or sample2 the more pythonic way of comparing?

class sample1
def __init__(self, a, b):
self.a = a
self.b = b
def __cmp__(self, other):
return self.a.__cmp__(other.a)

....or:

class sample2
def __init__(self, a, b):
self.a = a
self.b = b
def __cmp__(self, other):
if self.a < other.a:
return -1
elif self.a other.a:
return 1
else:
return 0

?

Thanks!

[Paul Rubin]

Dan Stromberg <st******@dcs.nac.uci.eduwrites:

def __cmp__(self, other):
if self.a < other.a:
return -1
elif self.a other.a:
return 1
else:
return 0

I think I'd have written

return cmp(self.a, other.a)

[Richard Jones]

Paul Rubin wrote:

Dan Stromberg <st******@dcs.nac.uci.eduwrites:

>def __cmp__(self, other):
if self.a < other.a:
return -1
elif self.a other.a:
return 1
else:
return 0

I think I'd have written

return cmp(self.a, other.a)

/me agrees

[Aahz]

In article <pa****************************@dcs.nac.uci.edu> ,
Dan Stromberg <st******@dcs.nac.uci.eduwrote:

>
Is sample1 or sample2 the more pythonic way of comparing?

Depending on what versions of Python you're targetting, some people
would argue neither (advocating the deprecation of __cmp__). I'm not
sure what the current status of __cmp__ is for Python 3.0.
--
Aahz (aa**@pythoncraft.com) <* http://www.pythoncraft.com/

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