Python : with dictionary, search for strings in another text file and print the entire line -

Python : with dictionary, search for strings in another text file and print the entire line -

i want search dictionary if 1 of words in sec txt file. have problem next code:

print 'searching known strings...\n' open('something.txt') f: haystack = f.read() open('d:\\users\\something\\desktop\\something\\dictionary\\entirelist.txt') f: needle in (line.strip() line in f): if needle in haystack: print line

the open statements not me, took them from: python: search strings listed in 1 file text file? want print line wrote line instead of needle. problems comes : says "line not defined".

my final objective see if words dictionary in "something.txt", , if yes, print line word identified. sorry bad english language or bad salutations, hope you'll help me! thx understanding :)

the specific exception asked because line doesn't exist outside generator expression. if want access it, need maintain in same scope print statement, this:

for line in f: needle = line.strip() if needle in haystack: print line

but isn't going particularly useful. it's going word needle plus newline @ end. if want print out line (or lines?) haystack include needle, have search line, not inquire whether needle appears anywhere in whole haystack.

to literally you're asking for, you're going need loop on lines of haystack , check each 1 needle. this:

with open('something.txt') f: haystacks = list(f) open('d:\\users\\something\\desktop\\something\\dictionary\\entirelist.txt') f: line in f: needle = line.strip() haystack in haystacks: if needle in haystack: print haystack

however, there's neat trick may want consider: if can write regular look matches finish line includes needle, need print out matches. this:

with open('something.txt') f: haystack = f.read() open('d:\\users\\something\\desktop\\something\\dictionary\\entirelist.txt') f: line in f: needle = line.strip() pattern = '^.*{}.*$'.format(re.escape(needle)) match in re.finditer(pattern, haystack, re.multiline): print match.group(0)

here's illustration of how regular look works:

^.*falco.*$

debuggex demo

of course of study if want search case-insensitively, or search finish words, etc., you'll need create minor changes; see regular look howto, or third-party tutorial, more.

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