Add withdraw method to cli (#2582)

golem/interface/client/account.py

@@ -1,16 +1,21 @@
 from typing import Dict, Any
 import getpass
 
+from decimal import Decimal
 from ethereum.utils import denoms
 
 from golem.core.deferred import sync_wait
-from golem.interface.command import command, group
+from golem.interface.command import Argument, command, group
 
 
 @group(help="Manage account")
 class Account:
     client = None  # type: 'golem.rpc.session.Client'
 
+    amount_arg = Argument('amount', help='Amount to withdraw, eg 1.45')
+    address_arg = Argument('destination', help='Address to send the funds to')
+    currency_arg = Argument('currency', help='ETH or GNT')
+
     @command(help="Display account & financial info")
     def info(self) -> Dict[str, Any]:  # pylint: disable=no-self-use
         client = Account.client
@@ -70,6 +75,17 @@ def unlock(self) -> str:  # pylint: disable=no-self-use
 
         return "Account unlock success"
 
+    @command(
+        arguments=(amount_arg, address_arg, currency_arg),
+        help="Withdraw GNT/ETH")
+    def withdraw(  # pylint: disable=no-self-use
+            self,
+            amount,
+            destination,
+            currency) -> str:
+        amount = str(int(Decimal(amount) * denoms.ether))
+        return sync_wait(Account.client.withdraw(amount, destination, currency))
+
 
 def _fmt(value: float, unit: str = "GNT") -> str:
     return "{:.6f} {}".format(value / denoms.ether, unit)