diff --git a/python.html.markdown b/python.html.markdown
index 2e7fd8be..12be4be1 100644
--- a/python.html.markdown
+++ b/python.html.markdown
@@ -657,6 +657,12 @@ math.sqrt == m.sqrt == sqrt  # => True
 import math
 dir(math)
 
+# If you have a Python script named math.py in the same
+# folder as your current script, the file math.py will 
+# be loaded instead of the built-in Python module. 
+# This happens because the local folder has priority
+# over Python's built-in libraries. 
+
 
 ####################################################
 ## 7. Advanced
diff --git a/python3.html.markdown b/python3.html.markdown
index d88ccec1..ea29fdba 100644
--- a/python3.html.markdown
+++ b/python3.html.markdown
@@ -716,6 +716,11 @@ math.sqrt(16) == m.sqrt(16)  # => True
 import math
 dir(math)
 
+# If you have a Python script named math.py in the same
+# folder as your current script, the file math.py will
+# be loaded instead of the built-in Python module.
+# This happens because the local folder has priority
+# over Python's built-in libraries.
 
 ####################################################
 ## 7. Advanced