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Re: [Discuss-gnuradio] os.popen broken pipe error

From: Eric Blossom
Subject: Re: [Discuss-gnuradio] os.popen broken pipe error
Date: Sun, 12 Apr 2009 21:10:23 -0700
User-agent: Mutt/1.5.18 (2008-05-17)

On Sun, Apr 12, 2009 at 08:42:59PM -0400, address@hidden wrote:
> Hi,
> I am trying to open one python script from another using the following code:
> command = 'python send.py -d %d -s %d -c %d -n %d -f trash_file.txt'
> %(dest_addr, sender_addr, cmd, seqno)
> os.popen(command)
> I get the broken pipe error for some reason. Can anyone please explain
> what is happening? Following are the file links if you want to reproduce
> the error:

A "broken pipe" occurs when when you attempt to write on a pipe
without a reader (See man 7 pipe).

You're not specifying the second argument to os.popen.  
It defaults to 'r'.  Do you want 'w'?

See the python library reference for more info.

> http://www.eden.rutgers.edu/~aanchan/input.txt
> http://www.eden.rutgers.edu/~aanchan/send.py
> http://www.eden.rutgers.edu/~aanchan/transceiver.py
> http://www.eden.rutgers.edu/~aanchan/trash_file.txt
> I am calling send.py from transceiver.py. The txt files are used as inputs.
> thanks and regards,
> -Sumit


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