A few things I added for a project of mine:

1. all_boards can now filter, for example open (https://developers.trello.com/advanced-reference/member#get-1-members-idmember-or-username-boards)
2. Cards and boards parse dateLastActivity without needing another fetch (as it is returned in the original json).

trello/board.py

@@ -4,6 +4,7 @@
 from trello.card import Card
 from trello.trellolist import List
 from trello.label import Label
+from dateutil import parser as dateparser
 
 
 class Board(object):
@@ -55,6 +56,12 @@ def from_json(cls, trello_client=None, organization=None, json_obj=None):
         board.description = json_obj.get('desc', '').encode('utf-8')
         board.closed = json_obj['closed']
         board.url = json_obj['url']
+
+        try:
+            board.date_last_activity = dateparser.parse(json_obj['dateLastActivity'])
+        except:
+            pass
+
         return board
 
     def __repr__(self):

trello/card.py

@@ -112,6 +112,7 @@ def from_json(cls, parent, json_obj):
         card.idLabels = json_obj['idLabels']
         card.idList = json_obj['idList']
         card.labels = Label.from_json_list(card.board, json_obj['labels'])
+        card.dateLastActivity = dateparser.parse(json_obj['dateLastActivity'])
         return card
 
     def __repr__(self):

trello/trelloclient.py

@@ -66,7 +66,7 @@ def logout(self):
         # TODO: This function.
         raise NotImplementedError()
 
-    def list_boards(self):
+    def list_boards(self, board_filter="all"):
         """
         Returns all boards for your Trello user
 
@@ -81,7 +81,7 @@ def list_boards(self):
             - closed: Boolean representing whether this board is closed or not
             - url: URL to the board
         """
-        json_obj = self.fetch_json('/members/me/boards')
+        json_obj = self.fetch_json('/members/me/boards/?filter=%s' % board_filter)
         return [Board.from_json(self, json_obj=obj) for obj in json_obj]
 
     def list_organizations(self):