[Tutor] File parsing

[spawgi at gmail.com]

Hello Neha,

I think this script will do what you want and will also fix some of the
issues in your original code -
--------------------------------------------------------
  1 #! /usr/bin/python
  2
  3 import curses.ascii
  4 import string
  5 import sys
  6
  7 with open(sys.argv[1],'r') as input:
  8   for eachline in input:
  9     eachline = eachline.strip('\n')
 10     if curses.ascii.isalpha(eachline[0]):
 11       first_char = ''
 12     else:
 13       first_char = eachline[0]
 14     last_char = eachline[len(eachline)-1]
 15     eachline = eachline.lstrip(first_char)
 16     eachline = eachline.rstrip(last_char)
 17     words = eachline.split(' ')
 18     outline = first_char
 19     for word in reversed(words):
 20       outline = outline + str(word) + ' '
 21     outline = outline.rstrip() + last_char + '\n'
 22     print outline
-----------------------------------------------------------------------------------

It is much more explicit. It considers some special cases and gives the
output in the format desired by you.

Regards,
SWP

On Fri, Jun 17, 2011 at 12:21 AM, Neha P <mywrkid at yahoo.com> wrote:

> Thanks James
>
> I guess i have to use the same code for text in yellow... seems like ther's
> no other way...
>
> Regards,
> Neha
> ------------------------------
> *From:* James Reynolds <eire1130 at gmail.com>
> *To:* Neha P <mywrkid at yahoo.com>
> *Cc:* "tutor at python.org" <tutor at python.org>
> *Sent:* Thursday, June 16, 2011 2:43 PM
> *Subject:* Re: [Tutor] File parsing
>
> use split on the list to split it up. search each element for something
> like:
>
> if '"' == element[:-1]:
>
> if that evaluation is True, I would remove the quote mark from the word on
> the right side, and place a new one on the left side using something like
> '"' + element.
>
> I would do the same thing for the other side in the same for loop, instead
> the evaluation would be:
>
> if '"' == element[:1]:
>
>
>
>
> On Thu, Jun 16, 2011 at 1:03 PM, Neha P <mywrkid at yahoo.com> wrote:
>
> Hi all,
> I know below query may sound silly, but can somebody suggest any better way
> of doing this:
> It would be helpful.
>
> I need to read a file line by line and print each line starting from the
> last word first:
>
> C:\Python26>type file_reversing_program.txt
> import sys
> import string
>
> f_obj=open(sys.argv[1],"r")
>
> for eachline in f_obj:
>     eachline=eachline[ :-1] # to eliminate the trailing "\n"
>     list_words=eachline.split(" ")
>     list_words[0]=list_words[0]+"\n" # to add "\n" so that after line 1 is
> printed, line 2 should start on a new line
>     list_words.reverse()
>     for every_word in list_words:
>          print every_word, #  'comma' helps in printing words on same
> line,hence for last word we append "\n"
>
> f_obj.close()
>
> C:\Python26>type input_file.txt
> "Hi ther, how are you?"
> I are doing fine, thank you.
>
> C:\Python26>file_reversing_program.py input_file.txt
> you?" are how ther, "Hi
> you. thank fine, doing are I
>
> Is there a better way of doing the above program, mainly the text
> highlighted in yellow,
> Also if that is settled can there be a logic for getting the ouput more
> properly formatted (for text in blue) ,
> say giving an output like  :
> "you? are how ther, Hi"
> you. thank fine, doing are I
>
>
> Thanks,
> Neha
>
>
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