Use newer ElementTree API to avoid future breakage.

7 files changed, 9 insertions, 10 deletions

diff --git a/markdown/blockprocessors.py b/markdown/blockprocessors.py
index 9c137df..a516fb4 100644
--- a/markdown/blockprocessors.py
+++ b/markdown/blockprocessors.py
@@ -148,7 +148,7 @@ class ListIndentProcessor(BlockProcessor):
         return block.startswith(' '*self.tab_length) and \
             not self.parser.state.isstate('detabbed') and \
             (parent.tag in self.ITEM_TYPES or
-                (len(parent) and parent[-1] and
+                (len(parent) and parent[-1] is not None and
                     (parent[-1].tag in self.LIST_TYPES)))
 
     def run(self, parent, blocks):
diff --git a/markdown/extensions/admonition.py b/markdown/extensions/admonition.py
index 87d8ec8..76e0fb5 100644
--- a/markdown/extensions/admonition.py
+++ b/markdown/extensions/admonition.py
@@ -46,7 +46,7 @@ class AdmonitionProcessor(BlockProcessor):
     def test(self, parent, block):
         sibling = self.lastChild(parent)
         return self.RE.search(block) or \
-            (block.startswith(' ' * self.tab_length) and sibling and
+            (block.startswith(' ' * self.tab_length) and sibling is not None and
              sibling.get('class', '').find(self.CLASSNAME) != -1)
 
     def run(self, parent, blocks):
diff --git a/markdown/extensions/codehilite.py b/markdown/extensions/codehilite.py
index 211db21..f1e51f9 100644
--- a/markdown/extensions/codehilite.py
+++ b/markdown/extensions/codehilite.py
@@ -201,12 +201,11 @@ class HiliteTreeprocessor(Treeprocessor):
 
     def run(self, root):
         """ Find code blocks and store in htmlStash. """
-        blocks = root.getiterator('pre')
+        blocks = root.iter('pre')
         for block in blocks:
-            children = block.getchildren()
-            if len(children) == 1 and children[0].tag == 'code':
+            if len(block) == 1 and block[0].tag == 'code':
                 code = CodeHilite(
-                    children[0].text,
+                    block[0].text,
                     linenums=self.config['linenums'],
                     guess_lang=self.config['guess_lang'],
                     css_class=self.config['css_class'],
diff --git a/markdown/extensions/def_list.py b/markdown/extensions/def_list.py
index 118b739..77cca6e 100644
--- a/markdown/extensions/def_list.py
+++ b/markdown/extensions/def_list.py
@@ -64,7 +64,7 @@ class DefListProcessor(BlockProcessor):
         else:
             state = 'list'
 
-        if sibling and sibling.tag == 'dl':
+        if sibling is not None and sibling.tag == 'dl':
             # This is another item on an existing list
             dl = sibling
             if not terms and len(dl) and dl[-1].tag == 'dd' and len(dl[-1]):
diff --git a/markdown/extensions/footnotes.py b/markdown/extensions/footnotes.py
index 4779f0c..d8caae2 100644
--- a/markdown/extensions/footnotes.py
+++ b/markdown/extensions/footnotes.py
@@ -287,7 +287,7 @@ class FootnoteTreeprocessor(Treeprocessor):
 
     def run(self, root):
         footnotesDiv = self.footnotes.makeFootnotesDiv(root)
-        if footnotesDiv:
+        if footnotesDiv is not None:
             result = self.footnotes.findFootnotesPlaceholder(root)
             if result:
                 child, parent, isText = result
diff --git a/markdown/extensions/headerid.py b/markdown/extensions/headerid.py
index 67c9b7d..2cb20b9 100644
--- a/markdown/extensions/headerid.py
+++ b/markdown/extensions/headerid.py
@@ -33,7 +33,7 @@ class HeaderIdTreeprocessor(Treeprocessor):
         start_level, force_id = self._get_meta()
         slugify = self.config['slugify']
         sep = self.config['separator']
-        for elem in doc.getiterator():
+        for elem in doc:
             if elem.tag in ['h1', 'h2', 'h3', 'h4', 'h5', 'h6']:
                 if force_id:
                     if "id" in elem.attrib:
diff --git a/markdown/extensions/toc.py b/markdown/extensions/toc.py
index 25d5d97..fdfa687 100644
--- a/markdown/extensions/toc.py
+++ b/markdown/extensions/toc.py
@@ -178,7 +178,7 @@ class TocTreeprocessor(Treeprocessor):
         anchor.attrib["href"] = "#" + elem_id
         anchor.attrib["class"] = "toclink"
         c.text = ""
-        for elem in c.getchildren():
+        for elem in c:
             anchor.append(elem)
             c.remove(elem)
         c.append(anchor)