diff -Nru codecgraph-20120114/debian/changelog codecgraph-20120114/debian/changelog
--- codecgraph-20120114/debian/changelog	2019-07-10 12:22:03.000000000 +0000
+++ codecgraph-20120114/debian/changelog	2019-09-11 07:18:06.000000000 +0000
@@ -1,3 +1,12 @@
+codecgraph (20120114-5) unstable; urgency=medium
+
+  * Add a patch and modifications for Python 3 transition 
+    (Closes: #936315)
+  * Change the maintainer's email to kengyu@debian.org
+  * Bump Standards-Version to 4.4.0
+
+ -- Keng-Yu Lin <kengyu@debian.org>  Wed, 11 Sep 2019 15:18:06 +0800
+
 codecgraph (20120114-4) unstable; urgency=low
 
   * Bump Standards-Version to 4.3.0
diff -Nru codecgraph-20120114/debian/control codecgraph-20120114/debian/control
--- codecgraph-20120114/debian/control	2019-07-10 12:22:03.000000000 +0000
+++ codecgraph-20120114/debian/control	2019-09-11 07:18:06.000000000 +0000
@@ -1,14 +1,14 @@
 Source: codecgraph
 Section: sound
 Priority: optional
-Maintainer: Keng-Yu Lin <kengyu@lexical.tw>
-Build-Depends: debhelper (>= 11), python (>= 2.6.6-3~), dh-python
-Standards-Version: 4.3.0
+Maintainer: Keng-Yu Lin <kengyu@debian.org>
+Build-Depends: debhelper (>= 12), dh-python, python3:any | python3-all:any | python3-dev:any | python3-all-dev:any | dh-sequence-python3
+Standards-Version: 4.4.0
 Homepage: http://helllabs.org/codecgraph/
 
 Package: codecgraph
 Architecture: all
-Depends: ${misc:Depends}, ${python:Depends}, graphviz
+Depends: ${misc:Depends}, ${python3:Depends}, graphviz
 Description: Generates graphviz graphs from HDA-Intel codec information
  Codecgraph is a tool to generate a graph based on the ALSA description 
  of a High Definition Audio codec. The generated graph depicts the HDA 
diff -Nru codecgraph-20120114/debian/patches/series codecgraph-20120114/debian/patches/series
--- codecgraph-20120114/debian/patches/series	2011-06-29 15:34:43.000000000 +0000
+++ codecgraph-20120114/debian/patches/series	2019-09-11 06:44:13.000000000 +0000
@@ -1,2 +1,3 @@
 avoid-usr-local-in-Makefile.patch
 move-py-file-to-usr-share.patch
+transition-to-python3.patch
diff -Nru codecgraph-20120114/debian/patches/transition-to-python3.patch codecgraph-20120114/debian/patches/transition-to-python3.patch
--- codecgraph-20120114/debian/patches/transition-to-python3.patch	1970-01-01 00:00:00.000000000 +0000
+++ codecgraph-20120114/debian/patches/transition-to-python3.patch	2019-09-11 07:11:17.000000000 +0000
@@ -0,0 +1,53 @@
+--- codecgraph-20120114.orig/codecgraph.py
++++ codecgraph-20120114/codecgraph.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/python
++#!/usr/bin/python3
+ #
+ # Script to generate graphviz graphs from HDA-Intel codec information
+ #
+@@ -50,7 +50,7 @@
+ 		yield parse_item(linelvl, lines)
+ 
+ def coloravg(a, b, v):
+-	r = tuple([int(a[i]*(1-v) + b[i]*v) for i in 0,1,2])
++	r = tuple(list(map(lambda i:int(a[i]*(1-v) + b[i]*v), [0,1,2])))
+ 	return r
+ 
+ def formatcolor(c):
+@@ -65,8 +65,8 @@
+ 
+ 	def set_values(self, values):
+ 		self.values = values
+-		self.gainvalues = [v & 0x7f for v in values]
+-		self.mutevalues = [(v & 0x80) <> 0 for v in values]
++		self.gainvalues = list(map(lambda v:v & 0x7f, values))
++		self.mutevalues = list(map(lambda v:(v & 0x80) != 0, values))
+ 
+ 	def color(self):
+ 		if True in self.mutevalues:
+@@ -287,7 +287,7 @@
+ 
+ 	def label(self):
+ 		r = '0x%02x' % (self.nid)
+-		print '// %r' % (self.fields)
++		print('// %r' % (self.fields))
+ 		pdef = self.fields.get('Pin Default')
+ 		if pdef:
+ 			pdef,subdirs = pdef
+@@ -474,11 +474,11 @@
+ 				i.new_output(n.nid)
+ 
+ 	def dump(self):
+-		print "Codec: %s" % (self.fields['Codec'])
+-		print "Nodes: %d" % (len(self.nodes))
++		print("Codec: %s" % (self.fields['Codec']))
++		print("Nodes: %d" % (len(self.nodes)))
+ 		for n in self.nodes.values():
+-			print "Node: 0x%02x" % (n.nid),
+-			print " %d conns" % (n.num_inputs)
++			print("Node: 0x%02x" % (n.nid),)
++			print(" %d conns" % (n.num_inputs))
+ 
+ 	def dump_graph(self, f):
+ 		f.write('digraph {\n')
diff -Nru codecgraph-20120114/debian/rules codecgraph-20120114/debian/rules
--- codecgraph-20120114/debian/rules	2015-06-02 06:25:02.000000000 +0000
+++ codecgraph-20120114/debian/rules	2019-09-11 07:18:06.000000000 +0000
@@ -1,3 +1,3 @@
 #!/usr/bin/make -f
 %:
-	dh $@ --with python2
+	dh $@ --with python3