Python Minidom XML解析器3

Question

<student id="1" student:name="robert">
 <sectionA>
  <class name="first"/>
 </sectionA>
</student>
<student id="2" student:name="lucky">
 <sectionB>
  <class name="first"/>
 </sectionB>
</student>
<student id="2" student:name="Dave">
 <sectionA>
  <class name="third"/>
 </sectionA>
</student>


from xml.dom import minidom

dom1 = minidom.parse("file.xml")
student = dom1.getElementsByTagName("student")
for b in student:
    sectionA = dom1.getElementsByTagName("sectionA")
    for a in sectionA:
        name = b.getAttribute("student:name")
        print name

This gives me the following output: robert lucky Dave

However I am expecting following output Expected Output: robert Dave

Answer 1

In this line:

student = dom1.getElementsByTagName("student")

Actually get all items and then always something exists in a , then you tried to getAttribute from b ! why b ?

Perhaps last for is completely not necessary, you can use:

student = dom1.getElementsByTagName("sectionA")

And then get attribute with parentNode !

You can use parentNode() for example, you can change your code to this:

from xml.dom import minidom

dom1 = minidom.parse("file.xml")
student = dom1.getElementsByTagName("sectionA")

for b in student:
  print(b.parentNode.getAttribute("name"))

# Output:
# robert
# Dave

Ref: xml.de