Parsing text file

[_Nestor]

Hi im doing a basic script to parse a text file
I want to look for a particular set of words. When i find the word then record the lines until there is a line that is blank

for line in logfile:
    for word in line.split():
        if word in KEYWORDS:
            print word
            while line != '\n':
               print line
               #Move to next line

Any help would be greatly appreciated

all you were doing is having a endless loop, this is what i did with some added features

logfile = open("logfile.txt", "r").readlines()
KEYWORDS = ['test', 'text']
counterline = []
counter = 0
for line in logfile:
    for word in line.split():
        counter+=1
        if word in KEYWORDS:
            counterline.append(counter)
            print word
print KEYWORDS
print counterline

see what you can do with that

[woooee]

If you want to print from the word to the end of the line, use index. This untested code will tell you if a word is found. You can then use .join to print out what you want.

for line in logfile:
    words_list = line.split():
    for word in KEYWORDS:
          ## or for word in words_list:
          ## use the shortest list in the for() statement
          print word
          if word in words_list:
               el_number = words_list.index( word )
               print "found", el_number, word
    print line
    #Move to next line

[pensaf]

for line in song:
for word in line.split():
counter+=1
if word in KEYWORDS:
counterline.append(counter)
print line,

Hi I tried the code snippets above and they work just great. But from the "found" list I wanted to be able to randomly select a few of them only and print those out.
How would I be able to expand the above codes to do that. I tried using random.sample(line,3) but that did not work for me. Thanks very much

[richieking]

where and on what data you want to use the random, keywords or the txt file?

[pensaf]

so here is the code
for line in song:
for word in line.split():
counter+=1
if word in KEYWORDS:
counterline.append(counter)
print line,

[pensaf]

sorry about that
The code is
KEYWORDS =
counterline = []
counter = 0
for line in song:
for word in line.split()
counter+=1
if word in KEYWORDS:
counterline.append(counter)
x=random.sample(line,10)
print x,
I'm expecting once it found the selection, from that selection it will randomly select 10 of the lines that had the KEYWORDS in them and report them out.

[TrustyTony]

KEYWORDS = ['Blues', 'Bossa']
counterline = []
counter = 0
for line in song:
    for word in line.split()
        counter+=1
        if word in KEYWORDS:
            counterline.append(counter)
            x=random.sample(line,10)
            print x,

I'm expecting once it found the selection, from that selection it will randomly select 10 of the lines that had the KEYWORDS in them and report them out.

[TrustyTony]

Why are you collecting counter numbers in counterline list? Line is string of one line of song, are you sure you want random letters from it?

import random
line = 'Faithfull, faithfull I adore thee'

print random.sample(line,10)
""" Example output:
['e', 'i', 'a', 'f', 'f', 'u', ' ', ',', 'i', 'l']
"""

[pensaf]

That code that I had earlier did not work, I know that.
I don't want random letters from it. Once it located the KEYWORD, I want the entire line name not random letters from it.