Fix typo and improved handling of symbols in comment

beem/comment.py

@@ -88,9 +88,13 @@ class Comment(BlockchainObject):
             "total_pending_payout_value",
             "promoted",
         ]
+        if self.steem.sbd_symbol is not None:
+            symbol = self.steem.sbd_symbol
+        else:
+            symbol = self.steem.steem_symbol        
         for p in sbd_amounts:
-            if p in comment and isinstance(comment.get(p), (string_types, list, dict)):
-                comment[p] = Amount(comment.get(p, "0.000 %s" % (self.steem.sbd_symbol)), steem_instance=self.steem)
+            if p in comment and isinstance(comment.get(p), (string_types, list, dict)) and symbol is not None:
+                comment[p] = Amount(comment.get(p, "0.000 %s" % (symbol)), steem_instance=self.steem)
 
         # turn json_metadata into python dict
         meta_str = comment.get("json_metadata", "{}")
@@ -276,7 +280,11 @@ class Comment(BlockchainObject):
     def reward(self):
         """ Return the estimated total SBD reward.
         """
-        a_zero = Amount(0, self.steem.sbd_symbol, steem_instance=self.steem)
+        if self.steem.sbd_symbol is not None:
+            symbol = self.steem.sbd_symbol
+        else:
+            symbol = self.steem.steem_symbol
+        a_zero = Amount(0, symbol, steem_instance=self.steem)
         total = Amount(self.get("total_payout_value", a_zero), steem_instance=self.steem)
         pending = Amount(self.get("pending_payout_value", a_zero), steem_instance=self.steem)
         return total + pending
@@ -285,7 +293,11 @@ class Comment(BlockchainObject):
         """ Return if the payout is pending (the post/comment
             is younger than 7 days)
         """
-        a_zero = Amount(0, self.steem.sbd_symbol, steem_instance=self.steem)
+        if self.steem.sbd_symbol is not None:
+            symbol = self.steem.sbd_symbol
+        else:
+            symbol = self.steem.steem_symbol        
+        a_zero = Amount(0, symbol, steem_instance=self.steem)
         total = Amount(self.get("total_payout_value", a_zero), steem_instance=self.steem)
         post_age_days = self.time_elapsed().total_seconds() / 60 / 60 / 24
         return post_age_days < 7.0 and float(total) == 0

beem/snapshot.py

@@ -40,7 +40,7 @@ class AccountSnapshot(list):
         """
         self.own_vests = [Amount(0, self.steem.vests_symbol, steem_instance=self.steem)]
         self.own_steem = [Amount(0, self.steem.steem_symbol, steem_instance=self.steem)]
-        self.own_sbd = [Amount(0, self.steem.steem_symbol, steem_instance=self.steem)]
+        self.own_sbd = [Amount(0, self.steem.sbd_symbol, steem_instance=self.steem)]
         self.delegated_vests_in = [{}]
         self.delegated_vests_out = [{}]
         self.timestamps = [addTzInfo(datetime(1970, 1, 1, 0, 0, 0, 0))]

beem/steem.py

@@ -1907,6 +1907,8 @@ class Steem(object):
         for asset in self.chain_params['chain_assets']:
             if asset['id'] == asset_id:
                 return asset['symbol']
+        if asset_id < 3:
+            return None
         raise KeyError("asset ID not found in chain assets")
 
     @property