[Tutor] Introduction - log exercise

[Nick Stinemates]

> I will read lines from file, with the 'for loop', and then I will check them for
> 'foo' matches with a 'while loop', if matches I (somehow) re-initialise the
> list, and if there is no matches for foo, I will append line to the list. When I
> get to a blank line (end of block), write myList to an external file. And start

Can you please explain what you mean by _re-initialize the list_ ?

> with another line.
> 
> I am stuck with defining 'blank line', I don't manage to get throught the while
> loop, any hint here I will really appreciate it.
> I don't expect the solution, as I think this is a great exercise to get wet
> with python, but if anyone thinks that this is the wrong way of solving the
> problem, please let me know.
> 
> 

Can you explain why the following won't work?


#!/usr/bin/python
 
import sys
import gzip
# At the moment not bother with argument part as I am testing it with a
# testing log file
#fileIn = gzip.open(sys.argv[1])

fileIn = gzip.open('big_log_file.gz', 'r')
fileOut = open('outputFile', 'a')

for line in fileIn:
    while line != 'blank_line':
        if 'foo' not in line:
            fileOut.write(line)
> 
> 
> Somehow rename outputFile with big_log_file.gz
> 
> fileIn.close()
> fileOut.close()
> 
> -------------------------------------------------------------
> 
> The log file will be fill with:
> 
> 
> Tue Nov 17 16:11:47 GMT 2009
> 	bladi bladi bla
> 	tarila ri la
> 	patatin pataton
> 	tatati tatata
> 
> Tue Nov 17 16:12:58 GMT 2009
> 	bladi bladi bla
> 	tarila ri la
> 	patatin pataton
> 	foo
> 	tatati tatata
> 
> Tue Nov 17 16:13:42 GMT 2009
> 	bladi bladi bla
> 	tarila ri la
> 	patatin pataton
> 	tatati tatata
> 
> 
> etc, etc ,etc
> ..............................................................
> 
> Again, thank you.
> 
> -- 
> -----------------------------
> Antonio de la Fuente Mart?nez
> E-mail: toni at muybien.org
> -----------------------------
> 
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