Use:

from beem import Steem
steem = Steem()
steem.wallet.unlock("xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx")
steem.post("title", "body", author="steem-mashine", tags=["a", "b", "c", "d", "e"], self_vote=True)

And get in the answer mistake

    raise NoWalletException
beem.exceptions.NoWalletException

The password is correct. What could be the problem?