diff --git a/.coveragerc b/.coveragerc
new file mode 100644
index 0000000..f11c9de
--- /dev/null
+++ b/.coveragerc
@@ -0,0 +1,7 @@
+[report]
+exclude_lines =
+    pragma: no cover
+    def __repr__
+    def __unicode__
+    raise AssertionError
+    raise NotImplementedError