inedx.py

def main():
    # Ask the user for input file name
    input_file = input("Enter the name of the file to read: ")

    try:
        # Try opening and reading the file
        with open(input_file, "r") as f:
            content = f.read()

        # Modify the content (example: make it uppercase)
        modified_content = content.upper()

        # Create an output file
        output_file = "modified_" + input_file
        with open(output_file, "w") as f:
            f.write(modified_content)

        print(f"✅ Successfully created '{output_file}' with modified content!")

    except FileNotFoundError:
        print(" Error: The file was not found. Please check the filename and try again.")
    except PermissionError:
        print(" Error: You don't have permission to read this file.")
    except Exception as e:
        print(f"An unexpected error occurred: {e}")


if __name__ == "__main__":
    main()