[Tutor] Fwd: Another string question

[Andre Engels]

2007/3/23, Jay Mutter III <jmutter at uakron.edu>:
>
>
> On Mar 23, 2007, at 5:30 AM, Andre Engels wrote:
>
> 2007/3/22, Jay Mutter III < jmutter at uakron.edu>:
> >
> > I wanted the following to check each line and if it ends in a right
> > parentheses then write the entire line to one file and if not then
> > write the line to anther.
> > It wrote all of the ) to one file and the rest of the line (ie minus
> > the ) to the other file.
>
>
> The line:
>      print "There are ", count, 'lines to process in this file'
> should give you a hint - don't you think this number was rather high?
>
> The problem is that if you do "for line in text" with text being a string,
> it will not loop over the _lines_  in the string, but over the _characters_
> in the string.
>
> The easiest solution would be to replace
>      text = in_file.read()
> by
>      text = in_file.readlines()
>
>
> Thanks for the response
> Actually the number of lines this returns is the same number of lines
> given when i put it in a text editor (TextWrangler).
> Luke had mentioned the same thing earlier but when I do change read to
> readlines  i get the following
>
>
> Traceback (most recent call last):
>   File "extract_companies.py", line 17, in ?
>     count = len(text.splitlines())
> AttributeError: 'list' object has no attribute 'splitlines'
>


Ah, yes, there you DO split in lines, but later you don't. You'll have to do
the same thing twice, that is either:

text = in_file.readlines()
count = len(text) # (instead of count = len(text.splitlines())

OR

text = in_file.read()
for line in text.splitlines(): # (instead of for line in text:)

in_filename = raw_input('What is the COMPLE
> >
>  TE name of the file you
> > would like to process?    ')
> > in_file = open(in_filename, 'rU')
> > text = in_file.read()
> > count = len(text.splitlines())
> > print "There are ", count, 'lines to process in this file'
> > out_filename1 = raw_input('What is the COMPLETE name of the file in
> > which you would like to save Companies?    ')
> > companies = open(out_filename1, 'aU')
> > out_filename2 = raw_input('What is the COMPLETE name of the file in
> > which you would like to save Inventors?    ')
> > patentdata = open(out_filename2, 'aU')
> > for line in text:
> >      if line[-1] in ')':
> >          companies.write(line)
> >      else:
> >          patentdata.write(line)
> > in_file.close()
> > companies.close ()
> > patentdata.close()
> >
> > Thanks
> >
> > jay
> > _______________________________________________
> > Tutor maillist  -   Tutor at python.org
> > http://mail.python.org/mailman/listinfo/tutor
> >
>
>
>
> --
> Andre Engels, andreengels at gmail.com
> ICQ: 6260644  --  Skype: a_engels
>
>
>


-- 
Andre Engels, andreengels at gmail.com
ICQ: 6260644  --  Skype: a_engels
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