I have lengthy xml this actually ebay listings using ebay api, I am trying to extract following structure in that xml dom:
I am only putting the segment that I am having trouble with, please let me know if you need to see the entire file, I could upload it to a location or do an attachment as a picture.
<ItemSpecifics>
<NameValueList>
<Name>Room</Name>
<Value>Living Room</Value>
</NameValueList>
<NameValueList>
<Name>Type</Name>
<Value>Sofa Set</Value>
</NameValueList>
<NameValueList>...</NameValueList>
<NameValueList>
<Name>Upholstery Fabric</Name>
<Value>Microfiber</Value>
</NameValueList>
<NameValueList>
<Name>Color</Name>
<Value>Beiges</Value>
</NameValueList>
<NameValueList>
<Name>Style</Name>
<Value>Contemporary</Value>
</NameValueList>
<NameValueList>
<Name>MPN</Name>
<Value>F7615, F7616, F7617, F7618, F7619, F7620</Value>
</NameValueList>
</ItemSpecifics>
Here is dom structure for another ebay item:
ItemSpecifics>
<NameValueList>
<Name>Brand</Name>
<Value>Nikon</Value>
</NameValueList>
<NameValueList>
<Name>Model</Name>
<Value>D3100</Value>
</NameValueList>
<NameValueList>
<Name>MPN</Name>
<Value>9798</Value>
</NameValueList>
<NameValueList>
<Name>Type</Name>
<Value>Digital SLR</Value>
</NameValueList>
<NameValueList>
<Name>Megapixels</Name>
<Value>14.2 MP</Value>
</NameValueList>
<NameValueList>
<Name>Optical Zoom</Name>
<Value>3.1x</Value>
</NameValueList>
<NameValueList>
<Name>Screen Size</Name>
<Value>3"</Value>
</NameValueList>
<NameValueList>
<Name>Color</Name>
<Value>Black</Value>
</NameValueList>
</ItemSpecifics>
But when I tried to extract above elements I endup getting following error:
attID=att.attributes.getNamedItem('Name').nodeValue
AttributeError: 'NoneType' object has no attribute 'nodeValue'
this is what I get right after I parse response:
[<DOM Element: NameValueList at 0x103398878>, <DOM Element: NameValueList at 0x103398ab8>, <DOM Element: NameValueList at 0x103398cf8>, <DOM Element: NameValueList at 0x103398f38>, <DOM Element: NameValueList at 0x1033b31b8>, <DOM Element: NameValueList at 0x1033b33f8>, <DOM Element: NameValueList at 0x1033b3638>, <DOM Element: NameValueList at 0x1033b3878>]
And this is what I get inside my for loop before getting the error:
<DOM Element: NameValueList at 0x103398878>
Here is my code:
results = {}
attributeSet=response.getElementsByTagName('NameValueList')
print attributeSet
attributes={}
for att in attributeSet:
print att
attID=att.attributes.getNamedItem('Name').nodeValue
attValue=getSingleValue(att,'Value')
attributes[attID]=attValue
result['attributes']=attributes
return result
This is my xml request method:
def sendRequest(apicall,xmlparameters):
connection = httplib.HTTPSConnection(serverUrl)
connection.request("POST", '/ws/api.dll', xmlparameters, getHeaders(apicall))
response = connection.getresponse()
if response.status != 200:
print "Error sending request:" + response.reason
else:
data = response.read()
connection.close()
return data
attributes.getNamedItem()
gives you the attributes of an element, not it's children, and a <NameValueList>
element has no Name
attribute, only <Name>
elements. You'd have to loop over the contained elements of <NameValueList>
, or use .getElementsByTagName('Name')
and .getElementsByTagName('Value')
to get individual sub-nodes.
Do yourself a big favour though and use the ElementTree API instead; that API is far pythononic and easier to use than the XML DOM API:
from xml.etree import ElementTree as ET
etree = ET.fromstring(data)
results = {}
for nvl in etree.findall('NameValueList'):
name = nvl.find('Name').text
value = nvl.find('Value').text
results[name] = value
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