<!DOCTYPE type> declaration missing in PrettyPrint()

I've seen something related to this in the archives, and it didn't look 
good.

I'm writing a python script to convert a report to XML to import into 
another program.

The problem is that the import function of the other program requires a 
<!DOCTYPE> declaration:

=== EXMAPLE ===
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE IMPORT>
<IMPORT>
     <some elements />
</IMPORT>
===

I've created a script using:

==== SCRIPT ====
import sys
from xml.dom import ext
from xml.dom.ext.reader import Sax2

reader=Sax2.Reader()

doc=reader.fromString("""
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE IMPORT>
<IMPORT>
</IMPORT>""")

(create nodes)

ext.PrettyPrint(doc)
====

Unfortunately, it does not output the <!DOCTYPE> line:
=== EXMAPLE ===
<?xml version="1.0" encoding="UTF-8"?>
<IMPORT>
     <some elements />
</IMPORT>
===

Any suggestions?

-- 

- Ken Roberts
Registered Linux user #296561
Slackin' since 1993
http://www.slackware.com

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