Fix xml.dom.minidom so it works again after the dict views introduction.

There are some methods in minidom that return dict.keys() directly.  There were
left alone since the tests passed without touching them, but it might be
prudent to just wrap them in a 'list' call to be safe for people expecting a
list.

BROKEN

@@ -1,2 +1,2 @@
     test_bsddb test_bsddb3 test_compile test_dumbdbm
-    test_importhooks test_iter test_iterlen test_minidom
+    test_importhooks test_iter test_iterlen

Lib/test/test_minidom.py

@@ -565,10 +565,8 @@ def _setupCloneElement(deep):
 def _testCloneElementCopiesAttributes(e1, e2, test):
     attrs1 = e1.attributes
     attrs2 = e2.attributes
-    keys1 = attrs1.keys()
-    keys2 = attrs2.keys()
-    keys1.sort()
-    keys2.sort()
+    keys1 = sorted(attrs1.keys())
+    keys2 = sorted(attrs2.keys())
     confirm(keys1 == keys2, "clone of element has same attribute keys")
     for i in range(len(keys1)):
         a1 = attrs1.item(i)
@@ -1351,8 +1349,7 @@ def testPickledDocument():
 
 # --- MAIN PROGRAM
 
-names = globals().keys()
-names.sort()
+names = sorted(globals().keys())
 
 failed = []
 

Lib/xml/dom/minidom.py

@@ -256,7 +256,7 @@ class Node(xml.dom.Node):
 
     def _call_user_data_handler(self, operation, src, dst):
         if hasattr(self, "_user_data"):
-            for key, (data, handler) in self._user_data.items():
+            for key, (data, handler) in list(self._user_data.items()):
                 if handler is not None:
                     handler.handle(operation, key, data, src, dst)
 
@@ -480,7 +480,7 @@ class NamedNodeMap(object):
 
     def item(self, index):
         try:
-            return self[self._attrs.keys()[index]]
+            return self[list(self._attrs.keys())[index]]
         except IndexError:
             return None
 
@@ -672,7 +672,7 @@ class Element(Node):
         return self.tagName
 
     def unlink(self):
-        for attr in self._attrs.values():
+        for attr in list(self._attrs.values()):
             attr.unlink()
         self._attrs = None
         self._attrsNS = None
@@ -805,8 +805,7 @@ class Element(Node):
         writer.write(indent+"<" + self.tagName)
 
         attrs = self._get_attributes()
-        a_names = attrs.keys()
-        a_names.sort()
+        a_names = sorted(attrs.keys())
 
         for a_name in a_names:
             writer.write(" %s=\"" % a_name)