def new_account(self, label=None):
acc, addr = self._backend.new_account(label=label)<EOL>assert acc.index == len(self.accounts)<EOL>self.accounts.append(acc)<EOL>return acc<EOL>
Creates new account, appends it to the :class:`Wallet`'s account list and returns it.

:param label: account label as `str`
:rtype: :class:`Account`