Re: [Tutor] changin two lines in a single python script

bob gailer Wed, 21 May 2008 10:41:39 -0700

1) When starting a new topic start a new email rather than replying toanother unrelated post.

2)
jatinder Singh wrote:

Hi .


        I am trying to change two lines in a single file (etc/php.ini) but my
script is not doing this in one time .Please hav a look

import re
import sys
import os

def re_new(pat, rep, s):
         print re.sub(pat, rep, s)

_stext_1 = 'memory_limit...M' #first word to search

_rtext_1 = 'memory_limit = 512M  ;'    #to be replaced with first word
_stext_2 = 'upload_max_filesize.*M'      #Second word
_rtext_2 = 'upload_max_filesize = 9M  ;'         #to replace with second
word
s = open("/home/ccuser/temp1.txt").readlines()
for record in s:
        re_new(_stext_1,_rtext_1,record)  #if found first then replaceit
        re_new(_stext_2,_rtext_2,record)  #else if found second then
replace that

Will you please help me to correct this script so as to both of the
changes occure at a singlr time

Thanks for past, now and future

Jatin


On Wed, 2008-05-21 at 16:29 +0200, [EMAIL PROTECTED] wrote:

Send Tutor mailing list submissions to
        tutor@python.org

To subscribe or unsubscribe via the World Wide Web, visit
        http://mail.python.org/mailman/listinfo/tutor
or, via email, send a message with subject or body 'help' to
        [EMAIL PROTECTED]

You can reach the person managing the list at
        [EMAIL PROTECTED]

When replying, please edit your Subject line so it is more specific
than "Re: Contents of Tutor digest..."


Today's Topics:

   1. Re: String Replacement question (Wolfram Kraus)
   2. python investment scheme assistance (Binish Huma Qadir)
   3. Re: String Replacement question (Kent Johnson)
   4. Re: String Replacement question (Moishy Gluck)
   5. Re: python investment scheme assistance (Kent Johnson)
   6. String Replacement Question (Kinuthia Muchane)
   7. Re: String Replacement Question (Moishy Gluck)


----------------------------------------------------------------------

Message: 1
Date: Wed, 21 May 2008 12:11:28 +0200
From: Wolfram Kraus <[EMAIL PROTECTED]>
Subject: Re: [Tutor] String Replacement question
To: tutor@python.org
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

Am 21.05.2008 11:35, Faheem schrieb:

Hi all,
 How do I replace the same value multiple times without repeating the
same variable name/value repeatedly?

for ex.some = 'thing'print '%s %s %s %s' % (some,some,some,some)


in this case, my question is how do i replace "% (some,some,some)" with
something more concise?

thanks in advance,
Faheem

Hi!

Two possible solutions:

print "%s %s %s %s" % (tuple([some]*4))

print " ".join([some for x in range(4)])

HTH,
Wolfram



------------------------------

Message: 2
Date: Wed, 21 May 2008 19:35:01 +1000 (EST)
From: Binish Huma Qadir <[EMAIL PROTECTED]>
Subject: [Tutor] python investment scheme assistance
To: tutor@python.org
Message-ID:
        <[EMAIL PROTECTED]>
        
Content-Type: text/plain; charset=UTF-8

Hi,

I'm doing a Investment implementation project where i need to use the
following data:
http://app.lms.unimelb.edu.au/bbcswebdav/courses/600151_2008_1/datasets/finance/asx_large.csv

I've been instructed to design an investment scheme in python.
The investment scheme i have chosen is based on investing in 3companies
with the highest dividend yield and lowest debt equity ratio.

The problem is that i dont know how to set up a python code that gives me
the top 3 companies with the above characterisics.

Your help would be much appreciated.
Thank you very much for your time.
Regards,
Binish



------------------------------

Message: 3
Date: Wed, 21 May 2008 06:36:30 -0400
From: "Kent Johnson" <[EMAIL PROTECTED]>
Subject: Re: [Tutor] String Replacement question
To: Faheem <[EMAIL PROTECTED]>
Cc: tutor@python.org
Message-ID:
        <[EMAIL PROTECTED]>
Content-Type: text/plain; charset=ISO-8859-1

On Wed, May 21, 2008 at 5:35 AM, Faheem <[EMAIL PROTECTED]> wrote:

Hi all,
 How do I replace the same value multiple times without repeating the
same variable name/value repeatedly?
for ex.

 some = 'thing'
 print '%s %s %s %s' % (some,some,some,some)

You can use named parameters, which moves the repetition to the format string:

In [24]: print '%(some)s %(some)s %(some)s %(some)s' % (dict(some=some))
thing thing thing thing

With multiple values, a common trick is to pass vars() or locals() as
the dict, giving the format access to all defined variables:

In [27]: a=1

In [28]: b=2

In [29]: print '%(a)s %(b)s' % vars()
1 2

If you literally need to repeat as in your example, you could do this:

In [26]: print '%s %s %s %s' % (4*(some,))
thing thing thing thing

Kent


------------------------------

Message: 4
Date: Wed, 21 May 2008 07:04:16 -0400
From: "Moishy Gluck" <[EMAIL PROTECTED]>
Subject: Re: [Tutor] String Replacement question
To: tutor@python.org
Message-ID:
        <[EMAIL PROTECTED]>
Content-Type: text/plain; charset="iso-8859-1"

Some other solutions might be

animal = 'cat'
" ".join((animal, ) * 4)

'cat cat cat cat'

animal = 'cat'
print " ".join((animal, ) * 4)

cat cat cat cat

#If you need the string injected into another string
print "My %s's name is ginger." % (" ".join((animal,) * 4))

My cat cat cat cat's name is ginger.

On Wed, May 21, 2008 at 6:36 AM, Kent Johnson <[EMAIL PROTECTED]> wrote:

On Wed, May 21, 2008 at 5:35 AM, Faheem <[EMAIL PROTECTED]>
wrote:

Hi all,
 How do I replace the same value multiple times without repeating the
same variable name/value repeatedly?
for ex.

 some = 'thing'
 print '%s %s %s %s' % (some,some,some,some)

You can use named parameters, which moves the repetition to the format
string:

In [24]: print '%(some)s %(some)s %(some)s %(some)s' % (dict(some=some))
thing thing thing thing

With multiple values, a common trick is to pass vars() or locals() as
the dict, giving the format access to all defined variables:

In [27]: a=1

In [28]: b=2

In [29]: print '%(a)s %(b)s' % vars()
1 2

If you literally need to repeat as in your example, you could do this:

In [26]: print '%s %s %s %s' % (4*(some,))
thing thing thing thing

Kent
_______________________________________________
Tutor maillist  -  Tutor@python.org
http://mail.python.org/mailman/listinfo/tutor

-------------- next part --------------
An HTML attachment was scrubbed...
URL: 
<http://mail.python.org/pipermail/tutor/attachments/20080521/4ac3ef9d/attachment-0001.htm>

------------------------------

Message: 5
Date: Wed, 21 May 2008 08:45:10 -0400
From: "Kent Johnson" <[EMAIL PROTECTED]>
Subject: Re: [Tutor] python investment scheme assistance
To: "Binish Huma Qadir" <[EMAIL PROTECTED]>
Cc: tutor@python.org
Message-ID:
        <[EMAIL PROTECTED]>
Content-Type: text/plain; charset=ISO-8859-1

On Wed, May 21, 2008 at 5:35 AM, Binish Huma Qadir
<[EMAIL PROTECTED]> wrote:

Hi,

I'm doing a Investment implementation project where i need to use the
following data:
http://app.lms.unimelb.edu.au/bbcswebdav/courses/600151_2008_1/datasets/finance/asx_large.csv

I've been instructed to design an investment scheme in python.
The investment scheme i have chosen is based on investing in 3companies
with the highest dividend yield and lowest debt equity ratio.

This sounds like a homework problem; we try to avoid doing homework.
We will help you with specific questions.

Do you know how to read the file? Maybe you could start with a program
that just reads and prints the csv file. The csv module can help with
that. Then compute and print the measures you need; finally pick out
the top three.

Try to write some code and ask here when you have trouble.

Kent


------------------------------

Message: 6
Date: Wed, 21 May 2008 16:42:11 +0300
From: Kinuthia Muchane <[EMAIL PROTECTED]>
Subject: [Tutor] String Replacement Question
To: tutor@python.org
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

st = "String"
print "%s " %st*3

String String String

Does this help?

Kinuthia...

-----------------------------

Message: 6
Date: Wed, 21 May 2008 15:05:21 +0530
From: Faheem <[EMAIL PROTECTED]>
Subject: [Tutor] String Replacement question
To: tutor@python.org
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain; charset=US-ASCII

Hi all,
  How do I replace the same value multiple times without repeating the
same variable name/value repeatedly?
for ex.

  some = 'thing'
  print '%s %s %s %s' % (some,some,some,some)

in this case, my question is how do i replace "% (some,some,some)" with
something more concise?

thanks in advance,
Faheem

------------------------------

Message: 7
Date: Wed, 21 May 2008 10:29:41 -0400
From: "Moishy Gluck" <[EMAIL PROTECTED]>
Subject: Re: [Tutor] String Replacement Question
To: tutor@python.org
Message-ID:
        <[EMAIL PROTECTED]>
Content-Type: text/plain; charset="iso-8859-1"

On Wed, May 21, 2008 at 10:29 AM, Moishy Gluck <[EMAIL PROTECTED]>
wrote:

"%s " %st*3

'String String String '
                            ^
If you look closely at the end of the string there is an extra space.

" ".join((st, )*3)

'String String String'
                           ^
No extra space.


On Wed, May 21, 2008 at 9:42 AM, Kinuthia Muchane <[EMAIL PROTECTED]>
wrote:

 st = "String"

print "%s " %st*3

String String String

Does this help?

Kinuthia...

-----------------------------

Message: 6
Date: Wed, 21 May 2008 15:05:21 +0530
From: Faheem <[EMAIL PROTECTED]>
Subject: [Tutor] String Replacement question
To: tutor@python.org
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain; charset=US-ASCII

Hi all,
 How do I replace the same value multiple times without repeating the
same variable name/value repeatedly?
for ex.

 some = 'thing'
 print '%s %s %s %s' % (some,some,some,some)

in this case, my question is how do i replace "% (some,some,some)" with
something more concise?

thanks in advance,
Faheem

_______________________________________________
Tutor maillist  -  Tutor@python.org
http://mail.python.org/mailman/listinfo/tutor

-------------- next part --------------
An HTML attachment was scrubbed...
URL: 
<http://mail.python.org/pipermail/tutor/attachments/20080521/c486b262/attachment.htm>

------------------------------

_______________________________________________
Tutor maillist  -  Tutor@python.org
http://mail.python.org/mailman/listinfo/tutor


End of Tutor Digest, Vol 51, Issue 44
*************************************



--
Bob Gailer
919-636-4239 Chapel Hill, NC

_______________________________________________
Tutor maillist  -  Tutor@python.org
http://mail.python.org/mailman/listinfo/tutor

Re: [Tutor] changin two lines in a single python script

Reply via email to