diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..e96d33d
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,7 @@
+__pycache__/
+*.py[cod]
+.pytest_cache/
+.coverage
+htmlcov/
+*.exe
+caeser_test
diff --git a/Learning/Part-1/Python/calcfinalq2.py b/Learning/Part-1/Python/calcfinalq2.py
index 6358120..5ee5505 100644
--- a/Learning/Part-1/Python/calcfinalq2.py
+++ b/Learning/Part-1/Python/calcfinalq2.py
@@ -91,22 +91,24 @@ def select_op(choice):
     print("Unrecognized operation")
 c1 = 0
 hist = []
-while True:
-  print("Select operation.")
-  print("1.Add      : + ")
-  print("2.Subtract : - ")
-  print("3.Multiply : * ")
-  print("4.Divide   : / ")
-  print("5.Power    : ^ ")
-  print("6.Remainder: % ")
-  print("7.Terminate: # ")
-  print("8.Reset    : $ ")
-  print("8.History  : ? ")  
-  # take input from the user
-  choice = input("Enter choice(+,-,*,/,^,%,#,$,?): ")
-  print(choice)
-  c1 +=1 
-  if(select_op(choice) == -1):
-    #program ends here
-    print("Done. Terminating")
-    exit()
\ No newline at end of file
+
+if __name__ == "__main__":
+  while True:
+    print("Select operation.")
+    print("1.Add      : + ")
+    print("2.Subtract : - ")
+    print("3.Multiply : * ")
+    print("4.Divide   : / ")
+    print("5.Power    : ^ ")
+    print("6.Remainder: % ")
+    print("7.Terminate: # ")
+    print("8.Reset    : $ ")
+    print("8.History  : ? ")
+    # take input from the user
+    choice = input("Enter choice(+,-,*,/,^,%,#,$,?): ")
+    print(choice)
+    c1 +=1
+    if(select_op(choice) == -1):
+      #program ends here
+      print("Done. Terminating")
+      exit()
\ No newline at end of file
diff --git a/Learning/Part-1/Python/test_calcfinalq2.py b/Learning/Part-1/Python/test_calcfinalq2.py
new file mode 100644
index 0000000..68e5c47
--- /dev/null
+++ b/Learning/Part-1/Python/test_calcfinalq2.py
@@ -0,0 +1,24 @@
+import unittest
+from calcfinalq2 import add
+
+class TestCalcAdd(unittest.TestCase):
+    def test_add_positive_numbers(self):
+        self.assertEqual(add(5, 3), 8)
+        self.assertEqual(add(10.5, 2.5), 13.0)
+
+    def test_add_negative_numbers(self):
+        self.assertEqual(add(-5, -3), -8)
+        self.assertEqual(add(-10.5, -2.5), -13.0)
+
+    def test_add_mixed_numbers(self):
+        self.assertEqual(add(5, -3), 2)
+        self.assertEqual(add(-10, 5), -5)
+        self.assertEqual(add(10.5, -2.5), 8.0)
+
+    def test_add_zero(self):
+        self.assertEqual(add(5, 0), 5)
+        self.assertEqual(add(0, -3), -3)
+        self.assertEqual(add(0, 0), 0)
+
+if __name__ == '__main__':
+    unittest.main()