best way to do some simple tasks
Michael Hudson
mwh at python.net
Thu Jan 30 07:20:03 EST 2003
Mike Meyer <mwm at mired.org> writes:
> Jp Calderone <exarkun at intarweb.us> writes:
> > On Wed, Jan 29, 2003 at 03:31:59PM -0800, Erik Lechak wrote:
> > > 3) What is the best way to do this?
> > >
> > > a=[1,2,3]
> > > b=[1,1,1]
> > >
> > > how do I get c=a+b (c=[2,3,4])?
> > >
> > import operator
> > c = map(operator.add, a, b)
>
> You can save the import with a bit of extra ugliness:
>
> c = map(int.__add__, a, b)
But then you lose polymorphism:
>>> int.__add__(1.0, 2.0)
Traceback (most recent call last):
File "<stdin>", line 1, in ?
TypeError: descriptor '__add__' requires a 'int' object but received a 'float'
Cheers,
M.
--
But since I'm not trying to impress anybody in The Software Big
Top, I'd rather walk the wire using a big pole, a safety harness,
a net, and with the wire not more than 3 feet off the ground.
-- Grant Griffin, comp.lang.python
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