How to use the mnemonic.mnemonic.Mnemonic function in mnemonic

a multiple of 32 between 128 and 256.
            passphrase (str): An optional passphrase for the generated
               mnemonic string.

        Returns:
            HDPrivateKey, str:
                a tuple consisting of the master
                private key and a mnemonic string from which the seed
                can be recovered.
        """
        if strength % 32 != 0:
            raise ValueError("strength must be a multiple of 32")
        if strength < 128 or strength > 256:
            raise ValueError("strength should be >= 128 and <= 256")
        entropy = rand_bytes(strength // 8)
        m = Mnemonic(language='english')
        n = m.to_mnemonic(entropy)
        return HDPrivateKey.master_key_from_seed(
            Mnemonic.to_seed(n, passphrase)), n

a multiple of 32 between 128 and 256.
            passphrase (str): An optional passphrase for the generated
               mnemonic string.

        Returns:
            HDPrivateKey, str:
                a tuple consisting of the master
                private key and a mnemonic string from which the seed
                can be recovered.
        """
        if strength % 32 != 0:
            raise ValueError("strength must be a multiple of 32")
        if strength < 128 or strength > 256:
            raise ValueError("strength should be >= 128 and <= 256")
        entropy = rand_bytes(strength // 8)
        m = Mnemonic(language='english')
        n = m.to_mnemonic(entropy)
        return HDPrivateKey.master_key_from_seed(
            Mnemonic.to_seed(n, passphrase)), n

a multiple of 32 between 128 and 256.
            passphrase (str): An optional passphrase for the generated
               mnemonic string.

        Returns:
            HDPrivateKey, str:
                a tuple consisting of the master
                private key and a mnemonic string from which the seed
                can be recovered.
        """
        if strength % 32 != 0:
            raise ValueError("strength must be a multiple of 32")
        if strength < 128 or strength > 256:
            raise ValueError("strength should be >= 128 and <= 256")
        entropy = rand_bytes(strength // 8)
        m = Mnemonic(language='english')
        n = m.to_mnemonic(entropy)
        return HDPrivateKey.master_key_from_seed(
            Mnemonic.to_seed(n, passphrase)), n

def master_key_from_mnemonic(mnemonic, passphrase=''):
        """ Generates a master key from a mnemonic.

        Args:
            mnemonic (str): The mnemonic sentence representing
               the seed from which to generate the master key.
            passphrase (str): Password if one was used.

        Returns:
            HDPrivateKey: the master private key.
        """
        return HDPrivateKey.master_key_from_seed(
            Mnemonic.to_seed(mnemonic, passphrase))

def __init__(self, language):
        self.mnemo = Mnemonic(language)
        # see https://primes.utm.edu/lists/2small/ for biggest primes that fit into X bits
        self.primes = {
            15: (2**120 - 119),
            19: (2**152 - 17),
            23: (2**184 - 33),
            27: (2**216 - 377),
            31: (2**248 - 237)
        }

def main():
    import binascii
    import sys

    if len(sys.argv) > 1:
        data = sys.argv[1]
    else:
        data = sys.stdin.readline().strip()
    data = binascii.unhexlify(data)
    m = Mnemonic("english")
    print(m.to_mnemonic(data))

def master_key_from_mnemonic(mnemonic, passphrase=''):
        """ Generates a master key from a mnemonic.

        Args:
            mnemonic (str): The mnemonic sentence representing
               the seed from which to generate the master key.
            passphrase (str): Password if one was used.

        Returns:
            HDPrivateKey: the master private key.
        """
        return HDPrivateKey.master_key_from_seed(
            Mnemonic.to_seed(mnemonic, passphrase))