[Tutor] Searching for items in two lists.

[Doug.Shawhan@gecits.ge.com]

Hi there.

I have a simple sorting routine that is giving me some unexpected results.

I have a file full of 9 character strings. I have a second file that
contains strings with those same 9 character srings that I wish to extract
to a list, then save to a file.

When I try my basic idea in the interpreter it works like so:

>>> l='freep, creeep, jeep'
>>> foop=l.split(',')
>>> turf=['eee','aaa']
>>> dorf=[]
>>> for thing in turf:
	for each in foop:
		if re.findall(thing, each)==[]:
			print 'nope'
		else: dorf.append(each)

nope
nope
nope
nope
nope
>>> dorf
[' creeep']
>>> 

This is what I expected...

However, when I try it in a script:

------------------------script---------------
import re

#open list of stuff to look for

f1=open("\\tmp\\snarf.txt",'r')

#open 600k file to look in

f2=open("\\tmp\\new.csv",'r')

lookfor=f1.readlines()
lookin=f2.readlines()

answers=[]

for item in lookfor:
	for searched_string in lookin:
		if re.findall(item, searched_string) == []:
			print 'nope'
		else: answers.append(searched_string)

report=open("\\tmp\\report.csv",'w')
for all in answers:
	report.write(all)

report.close()

---------------/script--------------------------------

I must have a flaw in my logic somewhere, cause my output file is on the
order of 15 megs!

Halp! What am I overlooking?

Thanks!