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Advice for a little search engine
Max HaasMax.Haas at unibas.ch
Sun Apr 15 08:17:12 EDT 2001
Hi all,I tried to implement a little search engine. Python is not the language Iknow thoroughly and I¹ve never written a search engine in any language.That¹s why I would like to ask (after having read as many Python documents Icould) if the following sketch is somewhat reasonable or if there are basicmistakes. (The program runs but it should be as fast as possible! Hm. Notjust a good job for an outsider.)Problem: 738 files with Latin text. Every file represents a singular source.Find every match of a term. (I need e.g. structura, structuram, structuraeetc.)To do: Enter a question in form of a regex and look for all occurrences. Ifthere is a match: (a) if it¹s the first match then give the contents of the file (in thecanonical form of those who prepared the files this is always line 10-15)and then (aa) give every match with (user defined) x words before the match, thematched word, and y words after the match;(b) if there was already a match in this source then do only (aa)The program:1. Enter the question and x and y. The question will then be the compiledobject p.2. Read every file in (something like fp.readlines()).3. Transform the file to a string (string.join(list_of_file)).4. m = p.findall(string). If m is not None then:a. Give the file contents (lines 10-15)b. look for the occurrence of every word in m and note the position (withstring.find)c. Give x words before the matched word, the matched word and then y wordsafter...The main problem for me is: do I understand correctly the function ofp.findall(string) in combination with string.find?Many thanks in advanceMax
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