[Tutor] File parsing

[G.nius.ck at gmail.com]

instead of
14 last_char = eachline[len(eachline)-1]
do
14 last_char = eachline[-1] #Which is shorter but the same thing

On , spawgi at gmail.com wrote:
> 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()
> sans-serif"> 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,



> serif">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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> --
> http://spawgi.wordpress.com
> We can do it and do it better.




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