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Re: Practice question

From Denis McMahon <denismfmcmahon@gmail.com>
Newsgroups comp.lang.python
Subject Re: Practice question
Date 2014-10-07 01:46 +0000
Organization A noiseless patient Spider
Message-ID <m0vglt$ppq$1@dont-email.me> (permalink)
References <h2j33adothf9uctcdp5psqk2cclr01961r@4ax.com>

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On Sun, 05 Oct 2014 19:02:31 -0400, Seymore4Head wrote:

> For the record, I don't want a hint.  I want the answer.
> I see a practice question is similar to this.
> 15 <= x < 30  And it wants a similar expression that is equivalent.

I think part of the problem here is that you don't understand the 
expression.

The expression:

15 <= x < 30

contains two conditions:

15 <= x

x < 30

For the whole expression to be true, both conditions must be true, hence 
the equivalence is:

(15 <= x) and (x < 30)

to test this in python command line, see if the two different expressions 
give the same result for a suitable range of values of x:

for x in range(50):
    if not (15 <= x < 30) == ((15 <= x) and (x < 30)):
        print "discrepancy"

or

for x in range(50):
    if (15 <= x < 30) == ((15 <= x) and (x < 30)):
        print "ok"

-- 
Denis McMahon, denismfmcmahon@gmail.com

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Thread

Practice question Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-10-05 19:02 -0400
  Re: Practice question Roy Smith <roy@panix.com> - 2014-10-05 19:06 -0400
  Re: Practice question Ned Batchelder <ned@nedbatchelder.com> - 2014-10-05 19:14 -0400
    Re: Practice question Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-10-05 20:07 -0400
      Re: Practice question Ned Batchelder <ned@nedbatchelder.com> - 2014-10-05 21:25 -0400
      Re: Practice question Steven D'Aprano <steve@pearwood.info> - 2014-10-07 08:41 +0000
  Re: Practice question Skip Montanaro <skip.montanaro@gmail.com> - 2014-10-05 18:33 -0500
    Re: Practice question Rustom Mody <rustompmody@gmail.com> - 2014-10-05 19:47 -0700
      Re: Practice question Skip Montanaro <skip.montanaro@gmail.com> - 2014-10-06 08:04 -0500
        Re: Practice question Rustom Mody <rustompmody@gmail.com> - 2014-10-06 09:23 -0700
          Re: Practice question Chris Angelico <rosuav@gmail.com> - 2014-10-07 03:52 +1100
            Re: Practice question Rustom Mody <rustompmody@gmail.com> - 2014-10-06 10:05 -0700
              Re: Practice question Chris Angelico <rosuav@gmail.com> - 2014-10-07 04:13 +1100
              Re: Practice question Steven D'Aprano <steve@pearwood.info> - 2014-10-06 20:49 +0000
                Re: Practice question "Redge @ Versalytics.com" <versalytics@gmail.com> - 2014-10-06 20:54 -0400
                Re: Practice question Rustom Mody <rustompmody@gmail.com> - 2014-10-08 09:14 -0700
                Re: Practice question Chris Angelico <rosuav@gmail.com> - 2014-10-09 03:23 +1100
                Re: Practice question Skip Montanaro <skip.montanaro@gmail.com> - 2014-10-08 11:27 -0500
                Re: Practice question Rustom Mody <rustompmody@gmail.com> - 2014-10-08 09:41 -0700
  Re: Practice question Terry Reedy <tjreedy@udel.edu> - 2014-10-05 19:47 -0400
    Re: Practice question Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-10-05 20:18 -0400
      Re: Practice question Steven D'Aprano <steve@pearwood.info> - 2014-10-07 08:48 +0000
        Re: Practice question C Smith <illusiontechniques@gmail.com> - 2014-10-07 05:43 -0700
  Re: Practice question C Smith <illusiontechniques@gmail.com> - 2014-10-05 16:24 -0700
  Re: Practice question Denis McMahon <denismfmcmahon@gmail.com> - 2014-10-07 01:46 +0000
    Re: Practice question Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-10-06 22:06 -0400
      Re: Practice question alister <alister.nospam.ware@ntlworld.com> - 2014-10-09 15:28 +0000

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