我想通过该 html 文本中的漂亮汤来查找特定单词在网页中出现了多少次？
我尝试了findAll 函数，但只找到特定标记中的单词，如soup.body.findAll 会在正文标记中找到特定单词，但我希望它在 html 文本中的所有标记中搜索该单词。
此外，一旦我找到那个词，我需要创建一个在那个词之前和之后的词列表，有人可以帮我怎么做吗？谢谢。
【问题讨论】：
标签： python python-2.7 beautifulsoup
根据newest BeautifulSoup 4 api，您可以使用recursive 关键字在整个树中查找文本。您将拥有字符串，然后您可以对其进行操作并分隔单词。
这是一个完整的例子：
import bs4
import re
data = '''
<html>
<body>
<div>today is a sunny day</div>
<div>I love when it's sunny outside</div>
Call me sunny
<div>sunny is a cool word sunny</div>
</body>
</html>
'''
searched_word = 'sunny'
soup = bs4.BeautifulSoup(data, 'html.parser')
results = soup.body.find_all(string=re.compile('.*{0}.*'.format(searched_word)), recursive=True)
print 'Found the word "{0}" {1} times\n'.format(searched_word, len(results))
for content in results:
words = content.split()
for index, word in enumerate(words):
# If the content contains the search word twice or more this will fire for each occurence
if word == searched_word:
print 'Whole content: "{0}"'.format(content)
before = None
after = None
# Check if it's a first word
if index != 0:
before = words[index-1]
# Check if it's a last word
if index != len(words)-1:
after = words[index+1]
print '\tWord before: "{0}", word after: "{1}"'.format(before, after)
它输出：
Found the word "sunny" 4 times
Whole content: "today is a sunny day"
Word before: "a", word after: "day"
Whole content: "I love when it's sunny outside"
Word before: "it's", word after: "outside"
Whole content: "
Call me sunny
"
Word before: "me", word after: "None"
Whole content: "sunny is a cool word sunny"
Word before: "None", word after: "is"
Whole content: "sunny is a cool word sunny"
Word before: "word", word after: "None"
【讨论】：
string关键字是在4.4版本中添加的，所以使用它或将soup.body.find_all(string=...)更改为soup.body.find_all(text=...)（4.3及之前的不同关键字）