找到一个xml标记并将标记名称替换为python

Question

我正在解析的kml文件： http ： //pastebin.com/kU5rPssk

我正在寻找与此正则表达式\\<name\\>(\\d+ \\@.*)\\<\\/name\\>匹配的所有<name>标记，然后操纵标记的文本。

这是我用来尝试测试正则表达式的代码：

import re
from bs4 import BeautifulSoup

#Open the KML file.
xmldoc = open('doc.kml', "r+")
soup = BeautifulSoup(xmldoc, "xml")

p = re.compile(r"\<name\>(\d+ \@.*)\<\/name\>")

result = re.findall(p, soup)

print result

我收到以下错误：

Traceback (most recent call last):
File ".\regex_test.py", line 10, in <module>
result = re.findall(p, soup)
File "C:\Python27\lib\re.py", line 177, in findall
return _compile(pattern, flags).findall(string)
TypeError: expected string or buffer

我究竟做错了什么？

Answer 1

将正则表达式传递给find_all()的text参数：

import re
from bs4 import BeautifulSoup

soup = BeautifulSoup(open('doc.kml'), 'xml')
for name in soup.find_all('name', text=re.compile("\d+ @.*")):
    print name

它打印：

<kml:name>13233 @ 2014-05-19 21:35:30 GMT (ACPU)</kml:name>
<kml:name>13233 @ 2014-05-19 21:36:30 GMT (ACPU)</kml:name>
<kml:name>13233 @ 2014-05-19 21:37:30 GMT (ACPU)</kml:name>
...
<kml:name>13233 @ 2014-05-19 22:28:30 GMT (ACPU)</kml:name>