Negativ nearest interger?
Have a simple question in the Integer calculator in Python 2.65 and also 2.7.. The consol showing: Python 2.6.5 (r265:79063, Apr 16 2010, 13:09:56) [GCC 4.4.3] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> 7.0/3 #fist to show floiting-point calculation 2.3335 >>> -7.0/3 -2.3335 >>> -7/-3 #Rounding to nearest interger. 2 >>> 7/3 2 >>> 7/-3 #Now to the problem with interger rounding with negative anwser. -3 >>> -7/3 -3 >>> -3 are more wrong than -2. Negativ number seems not to round to nearest interger, but the integer UNDER the anwser!! Or? Why? -- http://mail.python.org/mailman/listinfo/python-list
Re: Negativ nearest interger?
On Sep 22, 1:44 pm, Jussi Piitulainen
wrote:
> joni writes:
> > Have a simple question in the Integer calculator in Python 2.65 and
> > also 2.7..
>
> > The consol showing:
>
> > Python 2.6.5 (r265:79063, Apr 16 2010, 13:09:56)
> ...
> > >>> -7/3
> > -3
>
> > -3 are more wrong than -2. Negativ number seems not to round to
> > nearest interger, but the integer UNDER the anwser!! Or?
>
> > Why?
>
> It simply does not round to the nearest integer. It floors. This has
> nicer mathematical properties. In particular, it allows the remainder
> (notated as "per cent") operation (n % m) to return a number that
> differs from n by a multiple of m ("is congruent to n modulo m").
> These two operations go together.
Thanx. See if I can understand it /Cheers
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Python 3.11 with Pygame
Hi, Does Pygame work with 3.11? with 3.10 no problems. Br Joni -- https://mail.python.org/mailman/listinfo/python-list
Help newbie with how to call a source command
Hi all,
I'm landing here because I need some help that I couldn't get through it.
Question 1.
I want to call a source command from python script. It will source
some variables enviroment for further commands. I tried the following which did
not work
os.sys('source '+source_text)
call(['source',source_text], shell=True)
commands.getoutput('source '+source_text)
Anyone have experiences with this? Because I'm very new to this world so a
details reply is really appreciated!!! thank you very much
Question 2.
I call a shell command from python, this time it runs a script which runs some
ruby scripts. And the error returns: "ruby: command not found"
Thank you again
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a popen question. Please help
Hi all,
I write a small script
texts = os.popen('top').readlines()
print texts
It calls the command line "top" and will print out some texts.
But first I have to press the keyboard "q" to quit the subprocess "top", then
the texts will be printed, otherwise it just stands by with blank.
Question
is. Do you know how to give "q" into my python script so that "top" is
automatically quit immediately or maybe after 1s and print out the texts.
Thank you
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a popen command line question
Hi all,
I write a small script
status = os.popen('top').readlines()
print status
It calls the command line "top" and will print out the status.
But I have to press the keyboard "q" to quit "top", then the status will be
printed, otherwise it just stands by with blank.
Question is. Do you know how to give "q" into my python script so that "top" is
automatically quit immediately or maybe after 1s (for gathering information)
Sorry the question is weird.
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The story of Christmas.
Receive the TRUE story of Christmas via e mail, just click on the link. Thank you !! http://app.formassembly.com/forms/view/56128 -- http://mail.python.org/mailman/listinfo/python-list
