正在下载this页面并对其进行较小的编辑，更改第一个65在本段中68:
然后我解析两个来源美丽汤并将它们与difflib.
url = 'https://secure.ssa.gov/apps10/reference.nsf/links/02092016062645AM'
response = urllib2.urlopen(url)
content = response.read() # get response as list of lines
url2 = 'file:///Users/Pyderman/projects/temp/02092016062645AM-modified.html'
response2 = urllib2.urlopen(url2)
content2 = response2.read() # get response as list of lines
import difflib
d = difflib.Differ()
diffed = d.compare(content, content)
soup = bs4.BeautifulSoup(content, "lxml")
soup2= bs4.BeautifulSoup(content2, "lxml")
diff = d.compare(list(soup.stripped_strings), list(soup2.stripped_strings))
changes = [change for change in diff if change.startswith('-') or change.startswith('+')]
for change in changes:
print change
打印更改给出：
- The Achieving a Better Life Experience (ABLE) Act, H.R. 5771, legislation passed on December 19, 2014. It contains a Title II provision that changes the age at which workers compensation/public disability offset ends for disability beneficiaries from age 65 to full retirement age (FRA). This provision will apply to any individual who attains age 65 on or after December 19, 2015 (the one year anniversary of enactment of this bill). Two new Universal Text Identifiers (UTIs), UTI WCP060 and WCP061 were created to comply with this change.
+ The Achieving a Better Life Experience (ABLE) Act, H.R. 5771, legislation passed on December 19, 2014. It contains a Title II provision that changes the age at which workers compensation/public disability offset ends for disability beneficiaries from age 68 to full retirement age (FRA). This provision will apply to any individual who attains age 65 on or after December 19, 2015 (the one year anniversary of enactment of this bill). Two new Universal Text Identifiers (UTIs), UTI WCP060 and WCP061 were created to comply with this change.
因此，尽管变化很小，但它还是打印了整个段落。我认为它通过整个段落而不是句子来显示差异是一件好事，但是我们可以以某种方式使输出更加精细吗？就目前情况而言，似乎我想强调一下只是改变了文字，我必须对这两个几乎相同的字符串进行一些额外的增量比较。
您可以使用nltk.sent_tokenize()将 soup 字符串拆分成句子：
from nltk import sent_tokenize
sentences = [sentence for string in soup.stripped_strings for sentence in sent_tokenize(string)]
sentences2 = [sentence for string in soup2.stripped_strings for sentence in sent_tokenize(string)]
diff = d.compare(sentences, sentences2)
changes = [change for change in diff if change.startswith('-') or change.startswith('+')]
for change in changes:
print(change)
仅打印检测到更改的适当句子：
- It contains a Title II provision that changes the age at which workers compensation/public disability offset ends for disability beneficiaries from age 65 to full retirement age (FRA).
+ It contains a Title II provision that changes the age at which workers compensation/public disability offset ends for disability beneficiaries from age 68 to full retirement age (FRA).