I use ganache-cli --db to create a private test chain and save it on my computer,
and the result is below:

I use web3py w3.personal.newAccount('1') to add a new address, and I use print(len(w3.personal.listAccounts)) to show the amount of accounts, and the result is below
but when I shut down(ctrl +c) and turn on the ganache-cli again, I find there is no account saved.
