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Re: Flag control variable

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Date Tue, 11 Feb 2014 12:51:14 -0600
From Tim Chase <python.list@tim.thechases.com>
To python-list@python.org
Subject Re: Flag control variable
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On 2014-02-11 10:37, luke.geelen@gmail.com wrote:
>   command1 = "sudo mpg321
> 'http://translate.google.com/translate_tts?tl=en&q=%s_times%s_equals%s'"
> % (a, b, sum)
> 
> when using * i get 
> 
> Traceback (most recent call last):
>   File "./math+.py", line 6, in <module>
>     b = int(sys.argv[3])
> ValueError: invalid literal for int() with base 10:
> 'Adafruit-Raspberry-Pi-Python-Code'
> 
> i don't understand why b is a problem, it works fine with +

This is the fault of your shell (bash perhaps)?

Try this:

  bash$  echo +
  +
  bash$  echo *
  (a list of files in your current directory here)

which occurs because of file-globbing.

You have a couple options that occur to me:

1) quote the asterisk:

  bash$ ./mycode.py 3 "*" 2

which will let Python see it without the shell expanding it

2) use a different character/string such as "3 times 2"

3) pass the whole thing as a quoted string and then let Python do the
splitting:

   bash$ ./mycode.py "3 * 2"

   a, operator, b = argv[1:].split()
   print(a,b,c)

-tkc

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Thread

Flag control variable luke.geelen@gmail.com - 2014-02-11 09:29 -0800
  Re: Flag control variable Larry Martell <larry.martell@gmail.com> - 2014-02-11 12:44 -0500
  Re: Flag control variable Peter Otten <__peter__@web.de> - 2014-02-11 18:46 +0100
  Re: Flag control variable luke.geelen@gmail.com - 2014-02-11 10:00 -0800
  Re: Flag control variable luke.geelen@gmail.com - 2014-02-11 10:16 -0800
    Re: Flag control variable Tim Chase <python.list@tim.thechases.com> - 2014-02-11 12:32 -0600
  Re: Flag control variable luke.geelen@gmail.com - 2014-02-11 10:37 -0800
    Re: Flag control variable Tim Chase <python.list@tim.thechases.com> - 2014-02-11 12:51 -0600
    Re: Flag control variable Peter Otten <__peter__@web.de> - 2014-02-11 19:51 +0100
      Re: Flag control variable luke.geelen@gmail.com - 2014-02-11 11:01 -0800
        Re: Flag control variable luke.geelen@gmail.com - 2014-02-11 11:06 -0800
          Re: Flag control variable Gary Herron <gary.herron@islandtraining.com> - 2014-02-11 11:26 -0800
          Re: Flag control variable Tim Chase <python.list@tim.thechases.com> - 2014-02-11 13:28 -0600
            Re: Flag control variable luke.geelen@gmail.com - 2014-02-11 11:54 -0800
              Re: Flag control variable Mark Lawrence <breamoreboy@yahoo.co.uk> - 2014-02-11 20:02 +0000
        Re: Flag control variable Jussi Piitulainen <jpiitula@ling.helsinki.fi> - 2014-02-11 21:14 +0200
        Re: Flag control variable Gary Herron <gary.herron@islandtraining.com> - 2014-02-11 11:20 -0800
    Re: Flag control variable Gary Herron <gary.herron@islandtraining.com> - 2014-02-11 10:55 -0800
      Re: Flag control variable luke.geelen@gmail.com - 2014-02-11 10:59 -0800
        Re: Flag control variable Gary Herron <gary.herron@islandtraining.com> - 2014-02-11 11:09 -0800
        Re: Flag control variable Mark Lawrence <breamoreboy@yahoo.co.uk> - 2014-02-11 19:08 +0000
  Re: Flag control variable luke.geelen@gmail.com - 2014-02-11 11:55 -0800
    Re: Flag control variable Gary Herron <gary.herron@islandtraining.com> - 2014-02-11 12:19 -0800
      Re: Flag control variable luke.geelen@gmail.com - 2014-02-11 13:18 -0800
        Re: Flag control variable Gary Herron <gary.herron@islandtraining.com> - 2014-02-11 15:47 -0800
          Re: Flag control variable luke.geelen@gmail.com - 2014-02-11 21:09 -0800
            Re: Flag control variable Dave Angel <davea@davea.name> - 2014-02-12 00:23 -0500
              Re: Flag control variable luke.geelen@gmail.com - 2014-02-12 07:32 -0800
                Re: Flag control variable Mark Lawrence <breamoreboy@yahoo.co.uk> - 2014-02-12 15:42 +0000
                Re: Flag control variable Dave Angel <davea@davea.name> - 2014-02-12 13:51 -0500
            Re: Flag control variable Alain Ketterlin <alain@dpt-info.u-strasbg.fr> - 2014-02-12 17:10 +0100
              Re: Flag control variable luke.geelen@gmail.com - 2014-02-12 09:15 -0800
            Re: Flag control variable Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2014-02-12 20:46 -0500

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