Re: [Tutor] input and output files from terminal
"Brain Stormer" <[EMAIL PROTECTED]> wrote > Thanks for the file direction method but how do I get the names of > the files > so I can use it inside my program. I'm not sure I understand. Thepoint of using redirection is that your code doesn't need to know anything about the files, it just reads/writes to/from stdin/stdout. The OS connects the bits together at runtime. >> Easier to use file redirection: >> >> python test.py < inputfile > outputfile So you can provide any name you like for inputfile and outputfile when you execute the program. If you want the program to read/write to a specific file then use the standard open()/read/write functions Or am I missing something? Alan G. ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] input and output files from terminal
Actually, Let me take that back with the raw_input comment since it is not
the idle issue but I didn't want to the program to be interactive so I
didn't want to wait for someone to put the information and press enter.
Thanks for the file direction method but how do I get the names of the files
so I can use it inside my program.
On Mon, Apr 14, 2008 at 2:57 PM, Alan Gauld <[EMAIL PROTECTED]>
wrote:
>
> "Brain Stormer" <[EMAIL PROTECTED]> wrote
>
> >I have a python program which works fine when run using idle but I
> >would
> > like call the program from the terminal.
> >
> > python test.py -i inputfile -o outputfile
>
> Easier to use file redirection:
>
> python test.py < inputfile > outputfile
>
> The -i flag in particular might conflict with Pythons own -i option.
>
> > I tried with raw_input but that only works in idle.
>
> What makes you think that?
> raw_input is the normal way to get input from stdin.
>
> Can you explain what you did and what the result was?
> Perhaps with a short code example?
>
> Try this for example:
>
>
>
> name = raw_input('What's your name? ')
> print "hello", name
>
>
>
> That can be run in IDLE or in a command window
> or using file redirection as described above.
>
> Tell us how you get on...
>
>
> --
> Alan Gauld
> Author of the Learn to Program web site
> http://www.freenetpages.co.uk/hp/alan.gauld
>
>
> ___
> Tutor maillist - Tutor@python.org
> http://mail.python.org/mailman/listinfo/tutor
>
___
Tutor maillist - Tutor@python.org
http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] input and output files from terminal
"Brain Stormer" <[EMAIL PROTECTED]> wrote
>I have a python program which works fine when run using idle but I
>would
> like call the program from the terminal.
>
> python test.py -i inputfile -o outputfile
Easier to use file redirection:
python test.py < inputfile > outputfile
The -i flag in particular might conflict with Pythons own -i option.
> I tried with raw_input but that only works in idle.
What makes you think that?
raw_input is the normal way to get input from stdin.
Can you explain what you did and what the result was?
Perhaps with a short code example?
Try this for example:
name = raw_input('What's your name? ')
print "hello", name
That can be run in IDLE or in a command window
or using file redirection as described above.
Tell us how you get on...
--
Alan Gauld
Author of the Learn to Program web site
http://www.freenetpages.co.uk/hp/alan.gauld
___
Tutor maillist - Tutor@python.org
http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] input and output files from terminal
I used the optparse module since that is exactly what I wanted. Here is my
code:
import sys
from optparse import OptionParser
import os
parser = OptionParser()
parser.add_option("-i", "--input", dest="infile",
help="input FILE to convert", metavar="FILE")
parser.add_option("-o", "--output", dest="outfile",
help="output FILE to convert to", metavar="FILE")
(options, args) = parser.parse_args()
if not os.path.isfile(options.infile):
print "Input files does not exit...Quitting"
sys.exit()
elif os.path.isfile(options.outfile):
print "Output file exists, Remove it first"
sys.exit()
Thanks everyone.
On Mon, Apr 14, 2008 at 1:14 PM, <[EMAIL PROTECTED]> wrote:
> look at the OptParse module, with this u can easily realize such things.
> http://docs.python.org/lib/module-optparse.html
>
>
> On Mon, Apr 14, 2008 at 12:55:07PM -0400, Brain Stormer wrote:
> > I have a python program which works fine when run using idle but I would
> > like call the program from the terminal.
> >
> > python test.py -i inputfile -o outputfile
> >
> > I tried with raw_input but that only works in idle. Can this be
> achieved?
> > Thanks
>
> > ___
> > Tutor maillist - Tutor@python.org
> > http://mail.python.org/mailman/listinfo/tutor
>
> ___
> Tutor maillist - Tutor@python.org
> http://mail.python.org/mailman/listinfo/tutor
>
___
Tutor maillist - Tutor@python.org
http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] input and output files from terminal
On Mon, Apr 14, 2008 at 12:55 PM, Brain Stormer <[EMAIL PROTECTED]> wrote: > I have a python program which works fine when run using idle but I would > like call the program from the terminal. > > python test.py -i inputfile -o outputfile > > I tried with raw_input but that only works in idle. Can this be achieved? > Thanks > > ___ > Tutor maillist - Tutor@python.org > http://mail.python.org/mailman/listinfo/tutor Please see: http://www.faqs.org/docs/diveintopython/kgp_commandline.html >From the book: Dive into Python. Source code examples from the book: http://diveintopython.org/download/diveintopython-examples-4.1.zip Happy Programming! -- b h a a l u u at g m a i l dot c o m Kid on Bus: What are you gonna do today, Napoleon? Napoleon Dynamite: Whatever I feel like I wanna do. Gosh! ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] input and output files from terminal
i think you need to try : cat input.txt | /usr/bin/python test.py >output.txt > ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] input and output files from terminal
look at the OptParse module, with this u can easily realize such things. http://docs.python.org/lib/module-optparse.html On Mon, Apr 14, 2008 at 12:55:07PM -0400, Brain Stormer wrote: > I have a python program which works fine when run using idle but I would > like call the program from the terminal. > > python test.py -i inputfile -o outputfile > > I tried with raw_input but that only works in idle. Can this be achieved? > Thanks > ___ > Tutor maillist - Tutor@python.org > http://mail.python.org/mailman/listinfo/tutor ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
