python import base64 def encode_base64(input_string): input_bytes = input_string.encode('utf-8') encoded_bytes = base64.b64encode(input_bytes) encoded_string = encoded_bytes.decode('utf-8') return encoded_string def decode_base64(input_string): input_bytes = input_string.encode('utf-8') decoded_bytes = base64.b64decode(input_bytes) decoded_string = decoded_bytes.decode('utf-8') return decoded_string encoded_string = encode_base64(input_string) decoded_string = decode_base64(encoded_string)