[Python] I am facing this error "xml.parsers.expat.ExpatError: not well-formed (invalid...

I am facing this error xml.parsers.expat.ExpatError: syntax error: line 1, column 0 while parse data from url using minidom. Anyone can help me for this ?

Here is my code:

from xml.dom import minidom
import urllib2
url= 'http://www.awgp.org/about_us'
openurl=urllib2.urlopen(url)
doc=minidom.parse("about_us.xml")


Error:

Traceback (most recent call last):
File "test3.py", line 11, in <module>
doc=minidom.parse("about_us.xml")
File "C:\Python27\lib\xml\dom\minidom.py", line 1918, in parse
return expatbuilder.parse(file)
File "C:\Python27\lib\xml\dom\expatbuilder.py", line 924, in parse
result = builder.parseFile(fp)
File "C:\Python27\lib\xml\dom\expatbuilder.py", line 211, in parseFile
parser.Parse("", True)
xml.parsers.expat.ExpatError: syntax error: line 1, column 0

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