[Tutor] Complications Take Two (Long) Frustrations.
steve at pearwood.info
Sat Aug 22 09:00:55 CEST 2015
On Fri, Aug 21, 2015 at 11:29:52PM +0200, Roel Schroeven wrote:
> Joel Goldstick schreef op 2015-08-21 23:22:
> > print -max(-A, -B)
> That's what I mean, yes. I haven't tried it, but I don't see why it
> wouldn't work.
It won't work with anything which isn't a number:
py> min("hello", "goodbye")
But the max trick fails:
py> -max(-"hello", -"goodbye")
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: bad operand type for unary -: 'str'
If you want to write your own min without using the built-in, there is
only one correct way to do it that works for all objects:
def min(a, b):
if a < b: return a
Well, more than one way -- you can change the "a < b" to "a <= b" if you
prefer. Or reverse the test and use >, or similar, but you know what I
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