diff --git a/src/useful_scripts/doctest_example.py b/src/useful_scripts/doctest_example.py
new file mode 100644
index 0000000..104fc14
--- /dev/null
+++ b/src/useful_scripts/doctest_example.py
@@ -0,0 +1,11 @@
+'''
+The doctest module automatically runs any statement begining with >>> 
+and compares the following line with the output from the interpreter.
+
+>>> 1 == 1
+False
+'''
+
+if __name__ == '__main__':
+    import doctest
+    doctest.testmod()
\ No newline at end of file