Python：在difflib中传递SequenceMatcher“autojunk = False”标志产生错误 [英] Python: Passing SequenceMatcher in difflib an "autojunk=False" flag yields error

问题描述

我是尝试在Python的difflib包中使用SequenceMatcher方法来识别字符串相似性。虽然我遇到了奇怪的行为，但我相信我的问题可能与程序包的垃圾过滤器有关，这是一个详细描述的问题此处。只要说，我以为我可以解决我的问题，通过将一个autojunk标志传递给我的SequenceMatcher以 difflib文档：

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(None, s1, s2, autojunk=False)
    match = [s1[i:i+n] for i, j, n in s.get_matching_blocks() if n > 0]
    return match

print matches("they all are white a sheet of spotless paper when they first are born but they are to be scrawled upon and blotted by every goose quill", "you are all white a sheet of lovely spotless paper when you first are born but you are to be scrawled and blotted by every gooses quill")

但是这会产生以下错误消息：

But this yields the following error message:

Traceback (most recent call last):
  File "test3.py", line 8, in <module>
    print matches("they all are white a sheet of spotless paper when they first are born but they are to be scrawled upon and blotted by every goose quill", "you are all white a sheet of lovely spotless paper when you first are born but you are to be scrawled and blotted by every gooses quill")
  File "test3.py", line 4, in matches
    s = difflib.SequenceMatcher(None, s1, s2, autojunk=False)
TypeError: __init__() got an unexpected keyword argument 'autojunk'

有没有人知道我如何将autojunk = False标志传递给SequenceMatcher？我会感谢他人可以提供的任何建议。

Does anyone know how I might pass the autojunk=False flag to SequenceMatcher? I would be grateful for any suggestions others can offer.

推荐答案

根据 SequenceMatcher 文档：

可选参数 autojunk 可用于禁用自动垃圾启发式。

The optional argument autojunk can be used to disable the automatic junk heuristic.

新在版本 2.7.1 中：autojunk参数。

New in version 2.7.1: The autojunk parameter.

升级到Python 2.7.1+以使用 autojunk 参数。

Upgrade to Python 2.7.1+ to use autojunk parameter.

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