Written by Akinori Hattori <hattya@gentoo.org>, sourced from:
https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=e9f523470ee04ea0ed7ebadbc950b16e2afb17b5
Index: eekboard-1.0.8/eek/gen-keysym-entries.py
===================================================================
--- eekboard-1.0.8.orig/eek/gen-keysym-entries.py
+++ eekboard-1.0.8/eek/gen-keysym-entries.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/python3
 
 # Copyright (C) 2010-2011 Daiki Ueno <ueno@unixuser.org>
 # Copyright (C) 2010-2011 Red Hat, Inc.
@@ -18,17 +18,20 @@
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 # 02110-1301 USA
 
+from __future__ import print_function
 import sys
 import re
 
 if len(sys.argv) != 2:
-    print >> sys.stderr, "Usage: %s TABLE-NAME" % sys.argv[0]
+    print("Usage: %s TABLE-NAME" % sys.argv[0], file=sys.stderr)
     sys.exit(-1)
 
+py2 = sys.version_info[0] < 3
 table = dict()
 for line in sys.stdin:
-    line = line.decode('UTF-8')
-    match = re.match(r'\s*(0x[0-9A-F]+)\s+(\S*)\s+(\S*)', line, re.I)
+    if py2:
+        line = line.decode('UTF-8')
+    match = re.match(r'\s*(0x[0-9A-F]+)\s+(\w*)\s+(\w*)', line, re.I)
     if match:
         table[int(match.group(1), 16)] = (match.group(2), match.group(3))
 
@@ -37,8 +40,10 @@ sys.stdout.write("static const EekKeysym
 
 for index, (keysym, (l, c)) in enumerate([(keysym, table[keysym])
                                           for keysym in sorted(table.keys())]):
-    sys.stdout.write("    { 0x%X, %s, %s }" %
-                     (keysym, l.encode('UTF-8'), c.encode('UTF-8')))
+    if py2:
+        l = l.encode('UTF-8')
+        c = c.encode('UTF-8')
+    sys.stdout.write("    { 0x%X, %s, %s }" % (keysym, l, c))
     if index < len(table) - 1:
         sys.stdout.write(",")
     sys.stdout.write("\n")