analisando arquivo xml grande com Python - erro etree.parse

Tentando analisar o seguinte arquivo Python usando a função lxml.etree.iterparse.

"sampleoutput.xml"

<item>
  <title>Item 1</title>
  <desc>Description 1</desc>
</item>
<item>
  <title>Item 2</title>
  <desc>Description 2</desc>
</item>

Eu tentei o código deAnalisando arquivo XML grande com Python lxml e Iterparse

antes da chamada etree.iterparse (MYFILE) Eu fiz MYFILE = open ("/ Users / eric / Desktop / wikipedia_map / sampleoutput.xml", "r")

Mas aparece o seguinte erro

Traceback (most recent call last):
  File "/Users/eric/Documents/Programming/Eclipse_Workspace/wikipedia_mapper/testscraper.py", line 6, in <module>
    for event, elem in context :
  File "iterparse.pxi", line 491, in lxml.etree.iterparse.__next__ (src/lxml/lxml.etree.c:98565)
  File "iterparse.pxi", line 543, in lxml.etree.iterparse._read_more_events (src/lxml/lxml.etree.c:99086)
  File "parser.pxi", line 590, in lxml.etree._raiseParseError (src/lxml/lxml.etree.c:74712)
lxml.etree.XMLSyntaxError: Extra content at the end of the document, line 5, column 1

alguma ideia? obrigado!

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