diff -Nru python3-sympy-0.7.2/debian/changelog python3-sympy-0.7.2/debian/changelog
--- python3-sympy-0.7.2/debian/changelog	2012-11-12 14:06:17.000000000 +0000
+++ python3-sympy-0.7.2/debian/changelog	2012-11-19 16:36:42.000000000 +0000
@@ -1,4 +1,4 @@
-python3-sympy (0.7.2-1) quantal; urgency=low
+python3-sympy (0.7.2-1quantal1) quantal; urgency=low
 
   * Initial packaging of Python 3 version.
 
diff -Nru python3-sympy-0.7.2/debian/rules python3-sympy-0.7.2/debian/rules
--- python3-sympy-0.7.2/debian/rules	2012-10-28 17:22:43.000000000 +0000
+++ python3-sympy-0.7.2/debian/rules	2012-11-19 16:36:10.000000000 +0000
@@ -26,6 +26,8 @@
 override_dh_auto_install: $(PYTHON3:%=install-python%)
 	mv $(PKGDIR)/usr/bin/isympy $(PKGDIR)/usr/bin/isympy3
 	mv $(PKGDIR)/usr/share/man/man1/isympy.1 $(PKGDIR)/usr/share/man/man1/isympy3.1
+	# This file is invalid syntax for Python 3, so dpkg chokes trying to byte-compile it
+	rm $(PKGDIR)/usr/lib/python3/dist-packages/sympy/mpmath/libmp/exec_py2.py
 
 MPMATHDIR = sympy/mpmath
 override_dh_clean: