Added sample files for day 2 and 3

test5.py

@@ -0,0 +1,16 @@
+def validate(str):
+    for char in str:
+        if REPLACE ME:
+            raise ValueError("Crime detected!")
+
+try:
+    validate("abcdefg")
+    print("✅ test1 pass!")
+except:
+    print("❌ test1 pass!")
+
+try:
+    validate("abcdefg\rhijklmnop")
+    print("❌ test2 fail!")
+except ValueError as err:
+    print("✅ test2 pass!")