>>> import re
>>> txt = """<bookstore>
... <book category="COOKING">
... <title lang="english">Everyday Italian</title>
... <author>Giada De Laurentiis</author>
... <year>2005</year>
... <price>300.00</price>
... </book>
...
... <book category="CHILDREN">
... <title lang="english">Harry Potter</title>
... <author>J K. Rowling </author>
... <year>2005</year>
... <price>625.00</price>
... </book>
... </bookstore>"""
>>> exp = re.compile(r'<.*?>')
>>> text_only = exp.sub('',txt).strip()
>>> text_only
'Everyday Italian\n Giada De Laurentiis\n 2005\n 300.00\n
\n\n \n Harry Potter\n J K. Rowling \n 2005\n 6
25.00'
但是，如果您只想在Linux中搜索文件中的某些文本，则可以使用grep：
burhan@sand@R_387_2419@:~$ grep "Harry Potter" file.xml
<title lang="english">Harry Potter</title>
如果要搜索文件，请使用grep上面的命令，或打开文件并在Python中搜索：
>>> import re
>>> exp = re.compile(r'<.*?>')
>>> with open('file.xml') as f:
... lines = ''.join(line for line in f.readlines())
... text_only = exp.sub('',lines).strip()
...
>>> if 'Harry Potter' in text_only:
... print 'It exists'
... else:
... print 'It does not'
...
It exists
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