Taking the floating point distances and plotting histogram

[Fredrik Lundh]

aditya shukla wrote:

> I have a program whose output is stored in a text file , say test.txt
> eg.
> 0\9\10\11|0.50|c:\windows\apppatch/AcLayers.dll
> 0\9\10\11|0.50|c:\windows\apppatch/AcRedir.dll
> 0\9\10|0.66|c:\windows\apppatch/AcSpecfc.dll
> 0\9|0.83|c:\windows\apppatch/iebrshim.dll
> 
> After reading this text file i need to extract the float point values 
> from each line  ie , 0.50,0.50,0.66.0.83 <http://0.66.0.83> respectively 
> in this case, till the end of the file is reached and then i need to 
> plot a histogram based on these values .

Extracting is easy; you can do something like

     data = []
     for line in open("test.txt"):
         line = line.split("|")
         data.append(float(line[1]))

(or maybe use the csv module with a custom separator)

Plotting is a bit different -- there are many ways to do that, depending 
on where and how you want to display that histogram (on a website, in a 
window on your machine, in a PDF file, ...), but most solutions require 
additional libraries.  Here's one such library:

     http://matplotlib.sourceforge.net/

</F>