[Tutor] Filter question
Kooser, Ara S
askoose at sandia.gov
Tue Apr 13 15:50:33 EDT 2004
Thank you for the reply. I first tried just a simple copy from with the same
opening code and I had no problem. When I added the filter statement then it
stopped working. I will go read up more on the folterFile. I guess I am
entering something wrong. Here is the copy code I used.
inp = open("lmps.txt","r")
outp = open("out.txt","w")
for line in inp.readlines():
outp.write(line)
print "1 file copied"
inp.close()
outp.close()
-----Original Message-----
From: Danny Yoo [mailto:dyoo at hkn.eecs.berkeley.edu]
Sent: Tuesday, April 13, 2004 1:32 PM
To: Kooser, Ara S
Cc: 'tutor at python.org'
Subject: Re: [Tutor] Filter question
> (molecular dynamics output to visualizer input). I have set up the
> following filter, but it is not working. I don't receive an error
> message just a blank prompt at shell. Here is the code. I am trying to
> filter out any line the begins with I. I am using python 2.3.3.
> Thanks.
>
> Ara
>
> def filterFile(lmps, out):
> inp = open("lmps","r")
> outp = open("out","w")
> while 1:
> text = inp.readline()
> if line == "":
> break
> if line[0] == 'I':
> continue
> outp.write(line)
>
> inp.close()
> outp.close()
Hi Ara,
There's a bug in the file opening code:
###
def filterFile(lmps, out):
inp = open("lmps","r")
outp = open("out","w")
...
###
The code, as written, is trying to open up a file that's literally named
'Imps' for reading. It's also trying to open up a file that is literally
called 'out'.
Hope this helps!
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