R-1.2: added comments and r-1.2_scratch.py for tinkering

lab-01/r-1.2.py

@@ -1,5 +1,12 @@
+"""
+Full disclosure, prior to attempting this, I actually looked at the link
+at the top of page 51, and even visited it. I also relied heavily on w3schools
+compared to the textbook. While initially learning Python, I found the language
+of the book difficult, but as I grasped concepts, it came easier.
+"""
+
 def is_even(k):
-    if k & 2 != 10:
+    if k & 2 != 10: # I first thought to compare the var to an even number
         print(False)
     else:
         print(True)

lab-01/r-1.2_scratch.py

@@ -0,0 +1,10 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+"""
+Created on Wed Sep  2 21:21:46 2026
+
+@author: joseph
+"""
+
+def is_even(k):
+    if k &