This code performs the following tasks: 1. **`if __name__ == '__main__':`**: ...

This code performs the following tasks:

1. if __name__ == '__main__'::

   • This statement checks whether the Python script is being run directly by the Python interpreter (i.e., not imported as a module in another script).
   • If the script is executed directly, the code inside this block will run. If the script is imported, this block will not execute.

2. n = int(input().strip()):

   • This line reads a line of input from the user using the input() function.
   • strip() removes any leading or trailing whitespace (spaces, tabs, or newlines) from the user's input.
   • The int() function converts the trimmed input string into an integer.
   • The resulting integer is assigned to the variable n.

Summary:

This code ensures that the script only processes input for n (an integer variable) when it is run directly, not when imported. It waits for user input, removes extra whitespace, converts it to an integer (if possible), and stores it in the variable n.