diff -Nru protobuf-2.6.1/debian/changelog protobuf-2.6.1/debian/changelog
--- protobuf-2.6.1/debian/changelog	2015-08-26 22:38:00.000000000 +0200
+++ protobuf-2.6.1/debian/changelog	2017-11-29 17:55:41.000000000 +0100
@@ -1,3 +1,9 @@
+protobuf (2.6.1-1.3ubuntu1) xenial; urgency=medium
+
+  * Build python3 package too. 
+
+ -- Andrea Azzarone <andrea.azzarone@canonical.com>  Wed, 29 Nov 2017 17:55:06 +0100
+
 protobuf (2.6.1-1.3) unstable; urgency=medium
 
   * Non-maintainer upload.
diff -Nru protobuf-2.6.1/debian/control protobuf-2.6.1/debian/control
--- protobuf-2.6.1/debian/control	2015-08-06 08:47:50.000000000 +0200
+++ protobuf-2.6.1/debian/control	2017-11-29 17:52:21.000000000 +0100
@@ -15,8 +15,12 @@
  , dh-python
  , python-all (>= 2.7)
  , libpython-all-dev (>= 2.7)
+ , python3-all (>= 3.3)
+ , libpython3-all-dev (>= 3.3)
+ , python3-setuptools
  , python-setuptools
  , python-google-apputils
+ , python3-google-apputils
 # Manpage generator
  , xmlto
 # Tests
@@ -181,6 +185,27 @@
  need the protoc tool (in the protobuf-compiler package) to compile your
  definition to Python classes, and then the modules in this package will allow
  you to use those classes in your programs.
+
+Package: python3-protobuf
+Architecture: any
+Section: python
+Depends: ${shlibs:Depends}, ${python3:Depends}, ${misc:Depends}
+Description: Python 3 bindings for protocol buffers
+ Protocol buffers are a flexible, efficient, automated mechanism for
+ serializing structured data - similar to XML, but smaller, faster, and
+ simpler. You define how you want your data to be structured once, then you can
+ use special generated source code to easily write and read your structured
+ data to and from a variety of data streams and using a variety of languages.
+ You can even update your data structure without breaking deployed programs
+ that are compiled against the "old" format.
+ .
+ Google uses Protocol Buffers for almost all of its internal RPC protocols and
+ file formats.
+ .
+ This package contains the Python 3 bindings for the protocol buffers. You will
+ need the protoc tool (in the protobuf-compiler package) to compile your
+ definition to Python classes, and then the modules in this package will allow
+ you to use those classes in your programs.
 
 Package: libprotobuf-java
 Architecture: all
diff -Nru protobuf-2.6.1/debian/rules protobuf-2.6.1/debian/rules
--- protobuf-2.6.1/debian/rules	2015-08-26 22:37:55.000000000 +0200
+++ protobuf-2.6.1/debian/rules	2017-11-29 17:54:47.000000000 +0100
@@ -16,7 +16,10 @@
 	xmlto man debian/protoc.xml
 
 	# Python build.
+	cp -rv python python3
+	2to3 -w -n python3
 	cd python && python setup.py build --cpp_implementation
+	cd python3 && python3 setup.py build --cpp_implementation
 
 override_dh_auto_build-indep:
 	dh_auto_build --indep
@@ -34,6 +37,13 @@
 	cd python && for python in $(shell pyversions -r); do \
 		$$python setup.py test --cpp_implementation; \
 	done
+
+	# Python3 test.
+	set -e; \
+	export LD_LIBRARY_PATH=$(CURDIR)/src/.libs; \
+	cd python3 && for PYTHON in $(shell py3versions -r); do \
+		$$PYTHON setup.py test --cpp_implementation; \
+	done
 endif
 
 override_dh_auto_test-indep:
@@ -49,6 +59,9 @@
 	done
 	rm -rf python/protobuf.egg-info
 
+	# Python3 clean.
+	rm -rf python3
+
 override_dh_auto_clean-indep:
 	dh_auto_clean --indep
 
@@ -68,6 +81,14 @@
 	done
 	find $(CURDIR)/debian/python-protobuf -name 'protobuf-*-nspkg.pth' -delete
 
+	# Python3 install.
+	cd python3 && for python in $(shell py3versions -r); do \
+		$$python setup.py install --cpp_implementation \
+			--install-layout=deb --no-compile \
+			--root=$(CURDIR)/debian/python3-protobuf; \
+	done
+	find $(CURDIR)/debian/python3-protobuf -name 'protobuf-*-nspkg.pth' -delete
+
 override_dh_auto_install-indep:
 	dh_auto_install --indep