1 files changed, 9 insertions, 0 deletions
diff --git a/mit/assertion.py b/mit/assertion.py
new file mode 100644
index 0000000..a196067
--- /dev/null
+++ b/mit/assertion.py
@@ -0,0 +1,9 @@
+#!/usr/bin/python3
+
+def avg(grades):
+    assert not len(grades) == 0, 'no grades data'
+    return sum(grades) / len(grades)
+
+def fodeu():
+    a = 7 / 0
+    return a