Eric Lavigne wrote:
> Here is a shell command (MS-DOS):
> debug\curve-fit <input.txt >output.txt
>
> And here is a Python script that *should* do the same thing (and almost
> does):
Python equivalent is roughly:
import os
import subprocess
subprocess.Popen([os.path.join("debug", "curve-fit")],
stdin=file("input.txt"), stdout=file("output.txt", 'w')).wait()
> import os
>
> inputfilename = 'input.txt'
> outputfilename = 'output.txt'
>
> inputfile = open(inputfilename,'r')
> outputfile = open(outputfilename,'w')
> inputstream,outputstream = os.popen2("debug\\curve-fit")
> inputstream.write(inputfile.read())
> inputfile.close()
> inputstream.close()
> outputfile.write(outputstream.read())
> outputstream.close()
> outputfile.close()
>
> In the shell command, my curve-fit program processes the entire input
> file. In the Python script, my curve-fit program processes all except
> for the last line. Adding an extra newline to the end of my input file
> fixes this problem. What did I do wrong that led to this small
> difference?
No idea. Your version works fine for me.
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