sequencematcher

Python: Passing SequenceMatcher in difflib an “autojunk=False” flag yields error

由 早过忘川 提交于 2020-01-23 10:51:10
问题 I am trying to use the SequenceMatcher method in Python's difflib package to identify string similarity. I have experienced strange behavior with the method, though, and I believe my problem may be related to the package's "junk" filter, a problem described in detail here. Suffice it to say that I thought I could fix my problem by passing an autojunk flag to my SequenceMatcher in the way described by the difflib documentation: import difflib def matches(s1, s2): s = difflib.SequenceMatcher

difflib.SequenceMatcher isjunk argument not considered?

由 喜你入骨 提交于 2019-12-12 13:08:10
问题 In the python difflib library, is the SequenceMatcher class behaving unexpectedly, or am I misreading what the supposed behavior is? Why does the isjunk argument seem to not make any difference in this case? difflib.SequenceMatcher(None, "AA", "A A").ratio() return 0.8 difflib.SequenceMatcher(lambda x: x in ' ', "AA", "A A").ratio() returns 0.8 My understanding is that if space is omitted, the ratio should be 1. 回答1: This is happening because the ratio function uses total sequences' length

python3, difflib SequenceMatcher

由 房东的猫 提交于 2019-12-11 16:05:24
问题 the following takes in two strings, compares differences and return them both as identicals as well as their differences, separated by spaces (maintaining the length of the longest sting. The commented area in the code, are the 4 strings that should be returned. from difflib import SequenceMatcher t1 = 'betty: backstreetvboysareback"give.jpg"LAlarrygarryhannyhref="ang"_self' t2 = 'bettyv: backstreetvboysareback"lifeislike"LAlarrygarryhannyhref="in.php"_self' #t1 = 'betty :

How to delete invalid characters between multiple strings in python?

由 痞子三分冷 提交于 2019-12-10 11:42:07
问题 I'm working in a project with OCR in Spanish . The camera captures different frames in a line of text. The line of text contains this: Este texto, es una prueba del dispositivo lector para no videntes. After some operations I get strings like that: s1 = "Este texto, es una p!" s2 = "fste texto, es una |prueba u.-" s3 = "jo, es una prueba del dispo‘" s4 = "prueba del dispositivo \ec" s5 = "del dispositivo lector par:" s6 = "positivo lector para no xndev" s7 = "lector para no videntes" s8 = "¡r

Comparing two columns of a csv and outputting string similarity ratio in another csv

由 冷暖自知 提交于 2019-11-30 07:45:15
问题 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

Comparing two columns of a csv and outputting string similarity ratio in another csv

由 北战南征 提交于 2019-11-29 05:15:49
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
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