Ugly fix used when pyexpat is not available.

jhylton · jhylton · commit 3ff48036da16 · 2001-07-30T21:49:22.000Z
If pyexpat is not available and more than one attempt is made to load an expat-based xml parser, an empty xml.parser.expat module will be created. This empty module will confuse xml.sax.expatreader into thinking that pyexpat is available. The ugly fix is to verify that the expat module actually defines the names that are imported from pyexpat. git-svn-id: http://svn.python.org/projects/python/trunk@22080 6015fed2-1504-0410-9fe1-9d1591cc4771
diff --git a/Lib/xml/sax/expatreader.py b/Lib/xml/sax/expatreader.py
@@ -17,6 +17,9 @@
     from xml.parsers import expat
 except ImportError:
     raise SAXReaderNotAvailable("expat not supported",None)
+else:
+    if not hasattr(expat, "ParserCreate"):
+        raise SAXReaderNotAvailable("expat not supported",None)
 from xml.sax import xmlreader, saxutils, handler
 
 AttributesImpl = xmlreader.AttributesImpl
