Add genesisbalance class bitshares#217

Author: xeroc

bitshares/genesisbalance.py

@@ -0,0 +1,41 @@
+# -*- coding: utf-8 -*-
+from .account import Account
+from .instance import BlockchainInstance
+from graphenecommon.genesisbalance import (
+    GenesisBalance as GrapheneGenesisBalance,
+    GenesisBalances as GrapheneGenesisBalances,
+)
+
+from bitsharesbase.account import Address, PublicKey
+from bitsharesbase import operations
+
+
+@BlockchainInstance.inject
+class GenesisBalance(GrapheneGenesisBalance):
+    """ Read data about a Genesis Balances from the chain
+
+        :param str identifier: identifier of the balance
+        :param bitshares blockchain_instance: bitshares() instance to use when
+            accesing a RPC
+
+    """
+
+    type_id = 15
+
+    def define_classes(self):
+        self.account_class = Account
+        self.operations = operations
+        self.address_class = Address
+        self.publickey_class = PublicKey
+
+
+@BlockchainInstance.inject
+class GenesisBalances(GrapheneGenesisBalances):
+    """ List genesis balances that can be claimed from the
+        keys in the wallet
+    """
+
+    def define_classes(self):
+        self.genesisbalance_class = GenesisBalance
+        self.publickey_class = PublicKey
+        self.address_class = Address