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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def scrypt(password, salt='', n=2**20, r=8, p=1, maxmem=2**25, dklen=64):
 """ Derive a cryptographic key using the scrypt KDF. Implements the same signature as the ``hashlib.scrypt`` implemented in cpython version 3.6 """

    return nacl.bindings.crypto_pwhash_scryptsalsa208sha256_ll(
        password, salt, n, r, p, maxmem=maxmem, dklen=dklen)