Update basic_calculator.py

basic_calculator.py

@@ -1,10 +1,22 @@
 def calculator():
+    # The try block contains code that might raise an exception.
     try:
+        # Prompt the user to enter an expression.
         expression = input("Input: ")
+
+        # Evaluate the expression using the eval() function.
+        # This can be a security risk if user input is not trusted.
         result = eval(expression)
+
+        # Print the result of the expression.
         print("Output:", result)
+
+    # The except block catches any exceptions raised in the try block.
     except Exception as e:
+        # Print the error message.
         print("Error:", e)
 
+# The if __name__ == "__main__": block checks if the script is being run directly.
 if __name__ == "__main__":
+    # Call the calculator function.
     calculator()