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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 crypt(password, cost=2):
 """ Hash a password result sample: $pbkdf2-256-1$8$FRakfnkgpMjnqs1Xxgjiwgycdf68be9b06451039cc\ 0f7075ec1c369fa36f055b1705ec7a The returned string is broken down into - The algorithm and version used - The cost factor, number of iterations over the hash - The salt - The password """


    salt = _generate_salt(cost)

    hashed = pbkdf2.pbkdf2_hex(password, salt, cost * 500)

    return "$pbkdf2-256-1$" + str(cost) + "$" + salt.decode("utf-8") + "$" + hashed