Scott David Daniels wrote:
>>Though I guess we are all allowed to define "sound programming" for
>>ourselves.
>>
>>
>
>With the exception you pointed out about space shuttles.
>
>
if sum(abs(the_array)) != 0:
go ahead
Am I still blowing up anything, potentially??
Still preferring some
Arthur wrote:
>
> ... Is concerning myself with this distinction sound programming, or is
> the hard core answer more to the effect what works works, what doesn't
> doesn't - and one should focus only on that, and perhaps the performance
> impact of available alternatives?
For my money (and th
[EMAIL PROTECTED] wrote:
> I've not used .any or .all, but having just taught my CS1 students about
> boolean operators, I was reminded that Python works as the following example
> describes:
>
> x = a and b
> # if both a and b are true, x is assigned b, otherwise x is assigned a
You are mislead
Dan Crosta wrote:
>
>be careful:
>
> >>> a = [1, 0, -1]
> >>> if a: print "true"
>true
> >>> if sum(a) != 0: print "true
>
>
Oops.
Definitely keep me away from space shuttle projects ;)
Art
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Arthur wrote:
> if sum(x) !=0:
>use this array
> else:
>use other array.
be careful:
>>> a = [1, 0, -1]
>>> if a: print "true"
true
>>> if sum(a) != 0: print "true"
that's why it's probably safer and more readable to use any() and all(), which
i
believe were both introduced to __bu
John Zelle wrote:
>This is why in teaching I prefer to use explicit tests:
>
>if x != 0:
>do something
>
>Rather than
>
>if x:
>do something
>
>
>
Yeah, so in the case I am looking at there is a branching based on
whether either of 2 arrays are all zeros.
So to achieve numpy compatib
John Zelle wrote:
>On Monday 30 October 2006 10:49 am, Arthur wrote:
>
>
>>
>>thanks, but having some trouble:
>> >>> import Numeric as N
>> >>> a=N.array([0,0,0])
>> >>> b=N.array([0,0,1])
>> >>> a and b
>>
>>array([0, 0, 0])
>>
>>
>
>This tells me that a zero array is being treated as Fals
On Monday 30 October 2006 10:49 am, Arthur wrote:
> [EMAIL PROTECTED] wrote:
> >I've not used .any or .all, but having just taught my CS1 students about
> > boolean operators, I was reminded that Python works as the following
> > example describes:
> >
> >x = a and b
> ># if both a and b are true,
[EMAIL PROTECTED] wrote:
>
>I've not used .any or .all, but having just taught my CS1 students about
>boolean operators, I was reminded that Python works as the following example
>describes:
>
>x = a and b
># if both a and b are true, x is assigned b, otherwise x is assigned a
>x = 2 and 3 # x i
On Monday, October 30, 2006, at 08:30AM, "Arthur" <[EMAIL PROTECTED]> wrote:
>
>Looking for a little education on edu-sig.
>
>On one hand I am feeling like a big boy, having announced today on the
>vpython list that I think I have adequately accomplished the necessary
>fixes to the vpython C++
Looking for a little education on edu-sig.
On one hand I am feeling like a big boy, having announced today on the
vpython list that I think I have adequately accomplished the necessary
fixes to the vpython C++ code to accomplish compatibility with the newly
released numpy 1.0, and in a way tha
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