import sys

def interpret_bingbong(source_code):
    """
    Interprets a string of BingBong source code by converting it from a
    binary representation to a Python script and executing it.
    """
    binary_string = source_code.replace('.', '0').replace(',', '1')

    # Ensure the binary string has a valid length for UTF-8 conversion
    if len(binary_string) % 8 != 0:
        print("Error: The length of the binary string must be a multiple of 8.")
        return

    try:
        byte_array = bytearray(int(binary_string[i:i+8], 2) for i in range(0, len(binary_string), 8))
        python_code = byte_array.decode('utf-8')

        print("--- Executing Decoded Python Code ---")
        # WARNING: exec() is used here, which can be dangerous. Only run trusted BingBong code.
        exec(python_code)
        print("--- Execution Finished ---")

    except Exception as e:
        print(f"An error occurred during execution: {e}")

if __name__ == "__main__":
    if len(sys.argv) != 2:
        print("Usage: python bingbong_interpreter.py <source_file>")
        sys.exit(1)

    source_file = sys.argv[1]
    try:
        with open(source_file, 'r') as f:
            source_code = f.read()
        interpret_bingbong(source_code)
    except FileNotFoundError:
        print(f"Error: File not found at '{source_file}'")
        sys.exit(1)