code: def account_key(self, account):
          
  
          account = self._process_value(account, 'account')
  
          payload = {"account": account}
  
          resp = self.call('account_key', payload)
  
          return resp['key']
docs: Get the public key for **account**
  
          :param account: Account to get public key for
          :type account: str
  
          :raises: :py:exc:`nano.rpc.RPCException`
  
          >>> rpc.account_key(
          ...     account="xrb_1e5aqegc1jb7qe964u4adzmcezyo6o146zb8hm6dft8tkp79za3sxwjym5rx"
          ... )
          "3068BB1CA04525BB0E416C485FE6A67FD52540227D267CC8B6E8DA958A7FA039"