difflib

I am very new to python programming. I am trying to take a csv file that has two columns of string values and want to compare the similarity ratio of the string between both columns. Then I want to take the values and output the ratio in another file. The csv may look like this: Column 1|Column 2 tomato|tomatoe potato|potatao apple|appel I want the output file to show for each row, how similar the string in Column 1 is to Column 2. I am using difflib to output the ratio score. This is the code I have so far: import csv import difflib f = open('test.csv') csf_f = csv.reader(f) row_a = [] row_b

I am trying to use difflib to produce diff for two text files containing tweets. Here is the code: #!/usr/bin/env python # difflib_test import difflib file1 = open('/home/saad/Code/test/new_tweets', 'r') file2 = open('/home/saad/PTITVProgs', 'r') diff = difflib.context_diff(file1.readlines(), file2.readlines()) delta = ''.join(diff) print delta Here is the PTITVProgs text file: Watch PTI on April 6th (7) Dr Israr Shah at 10PM on Business Plus in "Talking Policy". Rgds #PTI CORRECTION!! Watch PTI on April 6th (5) @Asad_Umar at 8PM on ARY News. Rgds #PTI Watch PTI on April 6th (5) @Asad_Umar at

I am doing clinical message normalization (spell check) in which I check each given word against 900,000 word medical dictionary. I am more concern about the time complexity/performance. I want to do fuzzy string comparison, but I'm not sure which library to use. Option 1: import Levenshtein Levenshtein.ratio('hello world', 'hello') Result: 0.625 Option 2: import difflib difflib.SequenceMatcher(None, 'hello world', 'hello').ratio() Result: 0.625 In this example both give the same answer. Do you think both perform alike in this case? In case you're interested in a quick visual comparison of

I am trying to compare two text files and output the first string in the comparison file that does not match but am having difficulty since I am very new to python. Can anybody please give me a sample way to use this module. When I try something like: result = difflib.SequenceMatcher(None, testFile, comparisonFile) I get an error saying object of type 'file' has no len. For starters, you need to pass strings to difflib.SequenceMatcher, not files: # Like so difflib.SequenceMatcher(None, str1, str2) # Or just read the files in difflib.SequenceMatcher(None, file1.read(), file2.read()) That'll fix