How to store a variable when a script is executing for next time execution?

Newsgroups	comp.lang.python
Date	2013-06-06 03:50 -0700
Message-ID	<854fde32-9a5a-483e-b135-5d2c0d21b49b@googlegroups.com> (permalink)
Subject	How to store a variable when a script is executing for next time execution?
From	Avnesh Shakya <avnesh.nitk@gmail.com>

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hi,
   I am running a python script and it will create a file name like filename0.0.0 and If I run it again then new file will create one more like filename0.0.1...... my code is-

i = 0
for i in range(1000):
    try:
        with open('filename%d.%d.%d.json'%(0,0,i,)): pass
        continue
    except IOError:
        dataFile = file('filename%d.%d.%d.json'%(0,0,i,), 'a+')
        break
But It will take more time after creating many files, So i want to store value of last var "i" in a variable so that when i run my script again then I can use it. for example-
                 my last created file is filename0.0.27 then it should store 27 in a variable and when i run again then new file should be created 0.0.28 according to last value "27", so that i could save time and it can create file fast..

Please give me suggestion for it.. How is it possible?
Thanks

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How to store a variable when a script is executing for next time execution? Avnesh Shakya <avnesh.nitk@gmail.com> - 2013-06-06 03:50 -0700
  Re: How to store a variable when a script is executing for next time execution? Cameron Simpson <cs@zip.com.au> - 2013-06-06 21:19 +1000
  Re: How to store a variable when a script is executing for next time execution? Avnesh Shakya <avnesh.nitk@gmail.com> - 2013-06-06 17:36 +0530
  Re: How to store a variable when a script is executing for next time execution? Dave Angel <davea@davea.name> - 2013-06-06 08:14 -0400
  Re: How to store a variable when a script is executing for next time execution? Jussi Piitulainen <jpiitula@ling.helsinki.fi> - 2013-06-06 15:46 +0300
  Re: How to store a variable when a script is executing for next time execution? Chris Angelico <rosuav@gmail.com> - 2013-06-07 01:37 +1000
  Re: How to store a variable when a script is executing for next time execution? MRAB <python@mrabarnett.plus.com> - 2013-06-06 16:54 +0100
  Re: How to store a variable when a script is executing for next time execution? Chris Angelico <rosuav@gmail.com> - 2013-06-07 01:56 +1000

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