code: def pbkdf2(password, salt, iterations, dklen=0, digest=None):
      
      if digest is None:
          digest = settings.CRYPTOGRAPHY_DIGEST
      if not dklen:
          dklen = digest.digest_size
      password = force_bytes(password)
      salt = force_bytes(salt)
      kdf = PBKDF2HMAC(
          algorithm=digest,
          length=dklen,
          salt=salt,
          iterations=iterations,
          backend=settings.CRYPTOGRAPHY_BACKEND)
      return kdf.derive(password)
docs: Implements PBKDF2 with the same API as Django's existing
      implementation, using cryptography.
  
      :type password: any
      :type salt: any
      :type iterations: int
      :type dklen: int
      :type digest: cryptography.hazmat.primitives.hashes.HashAlgorithm