我试图找到所有具有值abc的书元素,即名称标签值.我用过xpath：

val = xml1.xpath(‘// bookstore / book / name [text()=“abc”]’)

但它正在返回无.

<bookstore>
 <book>
   <name>abc</name>
   <price>30</price>
 </book>
 <book>
   <name>Learning XML</name>
   <price>56</price>
 </book>
</bookstore> 

解决方法:

这是一种方法：

from lxml import etree

# Create an ElementTree instance 
tree = etree.parse("bookstore.xml")  

# Get all 'book' elements that have a 'name' child with a string value of 'abc'
books = tree.xpath('book[name="abc"]')

# Print name and price of those books
for book in books:
    print book.find("name").text, book.find("price").text

在问题中使用XML时的输出：

abc 30