Python-没有明确的XML-标记和值混合

Question

In the following section, while parsing I am getting correct printing for title, price but not for book id. Thank you all in advance.

The following tries to read book id, title, price an print them example structure of the booksExample.xml file

<book id="bk101">
  <author>F-NAME, L-NAME</author>
  <title>BOOK'S TITLE</title>
  <genre>Computer</genre>
  <price>44.95</price>
  <publish_date>2000-10-01</publish_date>
  <description>ANALYTICAL INFORMATION ABOUT IT.</description>
</book>

Code:

from xml.etree.ElementTree import parse
doc = parse('booksExample.xml')

for book in doc.findall('book'):
   id = book.findtext('id')
   title = book.findtext('title')
   price = book.findtext('price')
   print id, title, price

Answer 1

id is an attribute of the book element so you have to use book.get('id') , not book.findtext('id')

parse.py:

from xml.etree.ElementTree import parse
doc = parse('booksExample.xml')

for book in doc.findall('book'):
   id = book.get('id')
   title = book.findtext('title')
   price = book.findtext('price')
   print id, title, price

Just for reference, using the following as booksExample.xml : https://msdn.microsoft.com/en-us/library/ms762271(v=vs.85).aspx

output:

(parsexml)macbook:parsexml joeyoung$ python parse.py 
bk101 XML Developer's Guide 44.95
bk102 Midnight Rain 5.95
bk103 Maeve Ascendant 5.95
bk104 Oberon's Legacy 5.95
bk105 The Sundered Grail 5.95
bk106 Lover Birds 4.95
bk107 Splish Splash 4.95
bk108 Creepy Crawlies 4.95
bk109 Paradox Lost 6.95
bk110 Microsoft .NET: The Programming Bible 36.95
bk111 MSXML3: A Comprehensive Guide 36.95
bk112 Visual Studio 7: A Comprehensive Guide 49.95