Merge pull request #169 from sanderland/v1.4

minor fixes

katrain/core/ai.py

@@ -91,7 +91,7 @@ def ai_rank_estimation(strategy, settings) -> int:
 
 def weighted_selection_without_replacement(items: List[Tuple], pick_n: int) -> List[Tuple]:
     """For a list of tuples where the second element is a weight, returns random items with those weights, without replacement."""
-    elt = [(math.log(random.random()) / item[1], item) for item in items]  # magic
+    elt = [(math.log(random.random()) / (item[1] + 1e-18), item) for item in items]  # magic
     return [e[1] for e in heapq.nlargest(pick_n, elt)]  # NB fine if too small
 
 

katrain/gui/controlspanel.py

@@ -90,10 +90,11 @@ class ControlsPanel(BoxLayout):
     def set_status(self, msg, status_type, at_node=None):
         at_node = at_node or self.katrain and self.katrain.game and self.katrain.game.current_node
         if at_node != self.status_state[2] or int(status_type) >= int(self.status_state[1]) or msg == "":
+            if self.status_state != (msg, status_type, at_node):  # prevent loop if error in update eval
+                Clock.schedule_once(self.update_evaluation, 0)
             self.status_state = (msg, status_type, at_node)
             self.status.text = msg
             self.status.error = status_type == STATUS_ERROR
-            Clock.schedule_once(self.update_evaluation, 0)
 
     # handles showing completed analysis and score graph
     def update_evaluation(self, *_args):