diff --git a/cs172/Lect03/WorkingClock.py b/cs172/Lect03/WorkingClock.py
new file mode 100644
index 0000000000000000000000000000000000000000..0bc49ef7d9fa15ad483c3b6b9f4b68b3ec83f6b3
--- /dev/null
+++ b/cs172/Lect03/WorkingClock.py
@@ -0,0 +1,39 @@
+class Clock:
+    
+    def __init__(self):    
+        self.__hours = 12
+        self.__minutes = 0
+        
+    def getHours(self):
+        return self.__hours
+    
+    def getMinutes(self):
+        return self.__minutes
+    
+    def getTime(self):
+        return f"{self.__hours}:{str(self.__minutes).zfill(2)}"
+    
+    def setTime(self, newHours, newMinutes):
+        if newHours <= 12 and newHours >= 1:
+            self.__hours = newHours
+        else:
+            raise Exception("Invalid value for hours")
+        if newMinutes <= 59 and newMinutes >= 0:
+            self.__minutes = newMinutes
+        else:
+            raise Exception("Invalid value for minutes")
+
+    def addMinute(self):
+        self.__minutes += 1
+        if self.__minutes > 59:
+            self.__minutes = 0
+            self.__hours += 1
+            if self.__hours == 13:
+                self.__hours = 1
+    
+if __name__ == "__main__":
+    myClock = Clock()
+    while True:
+        print(myClock.getTime())
+        myClock.addMinute()
+
diff --git a/cs172/Lect03/old.py b/cs172/Lect03/old.py
index 68535134852d83b7f0f4d07a8067adf30fe9ab10..1373759ce94217f1cbb0b0a547b305f604de9214 100644
--- a/cs172/Lect03/old.py
+++ b/cs172/Lect03/old.py
@@ -1,7 +1,7 @@
 
 def main():
     print("This code is in the old file")
-    
+    s
 def printHappyFace():
     print("😘")