--- a/svghmi/hmi_tree.py	Mon Mar 27 10:19:14 2023 +0200
+++ b/svghmi/hmi_tree.py	Fri Oct 28 12:39:15 2022 +0800
@@ -6,8 +6,8 @@
 #
 # See COPYING file for copyrights details.
 
-from __future__ import absolute_import
-from itertools import izip, imap
+
+
 from pprint import pformat
 import weakref
 import hashlib
@@ -22,7 +22,7 @@
     "HMI_REAL":{}
 }
 
-HMI_TYPES = HMI_TYPES_DESC.keys()
+HMI_TYPES = list(HMI_TYPES_DESC.keys())
 
 class HMITreeNode(object):
     def __init__(self, path, name, nodetype, iectype = None, vartype = None, cpath = None, hmiclass = None):
@@ -56,7 +56,7 @@
         for child in self.children:
             if child.path is not None:
                 in_common = 0
-                for child_path_item, node_path_item in izip(child.path, node.path):
+                for child_path_item, node_path_item in zip(child.path, node.path):
                     if child_path_item == node_path_item:
                         in_common +=1
                     else:
@@ -105,7 +105,7 @@
         res = etree.Element(self.nodetype, **attribs)
 
         if hasattr(self, "children"):
-            for child_etree in imap(lambda c:c.etree(), self.children):
+            for child_etree in map(lambda c:c.etree(), self.children):
                 res.append(child_etree)
 
         return res
@@ -150,7 +150,7 @@
         s = hashlib.new('md5')
         self._hash(s)
         # limit size to HMI_HASH_SIZE as in svghmi.c
-        return map(ord,s.digest())[:8]
+        return list(map(ord,s.digest()))[:8]
 
     def _hash(self, s):
         s.update(str((self.name,self.nodetype)))