Datefinder Module Stranger behavior on particular string

问题

I have two strings:

s1 = 'Agreement dated on March 9, 2007'
s2 = 'Agreement signed on March 9, 2007'

I run below code on the string

import datefinder
matches =datefinder.find_dates(s1) ## or s2
for match in matches:
       print (match)

s2 gives me desired result but s1 doesn't as it contains the word dated.

P.S. I have used datefinder as I had multiple date formats and hence need to write multiple regex. This worked well just for this exception

Any idea why this strange behavior?

回答1:

It's not a bug in datefinder.

dated is one of the token patterns in the regex code:

EXTRA_TOKENS_PATTERN = r"due|by|on|during|standard|daylight|savings|time|date|dated|of|to|through|between|until|at|day"

You will likely need to write a regex to by pass the issue or become a contributor to the project to fix the issue.

https://github.com/akoumjian/datefinder

来源：https://stackoverflow.com/questions/54673878/datefinder-module-stranger-behavior-on-particular-string