just someone write these functions out for me in python, thank you. please do include indentations

def decrypt (cipherText, key) Accepts a ciphertext and a key, and returns a plaintext that is the decryption of the ciphertext using the input key. Hef readFile(fileName) Accepts a filename and returns the content of the file as a list of bytes. For this, you need to open the file in binary mode. Hef writeFile(fileName, content) Accepts a filename and a content, and writes the content to the file. For this, you need to open the file in binary mode. Use the python built-in function bytes to convert the content to a list of bytes before writing it to the file