revert change to get_belief() in Concept; add parameter to Reasoner t…

…o specify which inference engine to use

pynars/NARS/Control/Reasoner.py

@@ -40,7 +40,8 @@ def __init__(self, theorem, budget: Budget) -> None:
             super().__init__(hash(theorem), budget)
             self._theorem = theorem
 
-    def __init__(self, n_memory, capacity, config='./config.json', nal_rules={1, 2, 3, 4, 5, 6, 7, 8, 9}, inference: str = 'kanren') -> None:
+    def __init__(self, n_memory, capacity, config='./config.json', 
+                 nal_rules={1, 2, 3, 4, 5, 6, 7, 8, 9}, inference: str = 'kanren') -> None:
         # print('''Init...''')
         Config.load(config)
 

pynars/NARS/DataStructures/_py/Concept.py

@@ -78,10 +78,10 @@ def get_belief(self) -> Belief:
 
             # return projectedBelief;     // return the first satisfying belief
             raise
-        if self.belief_table.empty:
-            for term_link in self.term_links:
-                if not term_link.target.belief_table.empty:
-                    return term_link.target.belief_table.first()
+        # if self.belief_table.empty:
+        #     for term_link in self.term_links:
+        #         if not term_link.target.belief_table.empty:
+        #             return term_link.target.belief_table.first()
         return self.belief_table.first()
 
     # def match_candidate(self, sentence: Sentence) -> Task | Belief: