Overload __str__ #53

jupyddl/automated_planner.py

@@ -100,20 +100,30 @@ def get_actions_from_path(self, path):
             return []
         actions = []
         for node in path:
-            actions.append((node.parent_action, node.g_cost))
-
-        cost = self.pddl.get_value(path[-1].state, "total-cost")
-        if not cost:
-            return actions
-        return (actions, cost)
+            if not node.parent_action:
+                break
+            act = str(node.parent_action).replace("<PyCall.jlwrap ", "")
+            cost = "total-cost = " + str(node.g_cost)
+            actions.append((act, cost))
+
+        return actions
+
+    def __stringify_state(self, state):
+        state_str = str(state).replace("<PyCall.jlwrap PDDL.State(", "")
+        state_str = state_str.replace("Set(Julog.Term[", "")
+        state_str = state_str.replace("])", "")
+        state_str = state_str.replace('Dict{Symbol,Any}(Symbol("total-cost") =>', "total-cost =")
+        state_str = state_str.replace("))>", "")
+        return state_str
 
     def get_state_def_from_path(self, path):
         if not path:
             self.logger.warning("Path is empty, can't operate...")
             return []
         trimmed_path = []
         for node in path:
-            trimmed_path.append(node.state)
+            state = self.__stringify_state(node.state)
+            trimmed_path.append(state)
         return trimmed_path
 
     def breadth_first_search(self):

jupyddl/node.py

@@ -17,6 +17,7 @@ def __init__(
         self.state = state
         self.parent_action = parent_action
         self.parent = parent
+        self.automated_planner = automated_planner
         temp_cost = automated_planner.pddl.get_value(state, "total-cost")
         if temp_cost:
             self.g_cost = temp_cost
@@ -51,5 +52,24 @@ def __init__(
         self.is_closed = is_closed
         self.is_open = is_open
 
+    def __stringify_state(self, state):
+        state_str = str(state).replace("<PyCall.jlwrap PDDL.State(", "")
+        state_str = state_str.replace("Set(Julog.Term[", "")
+        state_str = state_str.replace("])", "")
+        state_str = state_str.replace('Dict{Symbol,Any}(Symbol("total-cost") =>', "total-cost =")
+        state_str = state_str.replace("))>", "")
+        return state_str
+
     def __lt__(self, other):
         return self.f_cost <= other.f_cost
+
+    def __str__(self):
+        state = self.__stringify_state(self.state)
+        return "Node { %s | g = %.2f | h = %.2f | open = %s | closed = %s }" % (state, self.g_cost, self.h_cost, self.is_open, self.is_closed)
+
+class Path:
+    def __init__(self, nodes):
+        self.nodes = nodes
+
+    def __str__(self):
+        return str([str(n) for n in self.nodes])

tests/test_dfs.py

@@ -0,0 +1,2 @@
+import sys
+from os import path

tests/test_node.py

@@ -5,7 +5,7 @@
 
 sys.path.append(path.dirname(path.dirname(path.abspath(__file__))))
 from jupyddl.automated_planner import AutomatedPlanner
-from jupyddl.node import Node
+from jupyddl.node import Node, Path
 
 
 def test_node_equality_cost():
@@ -36,3 +36,25 @@ def test_node_equality_no_cost():
     assertion2 = next_node < next_node_v2
 
     assert assertion and assertion2
+
+def test_stringified_node():
+    apla = AutomatedPlanner(
+        "pddl-examples/dinner/domain.pddl", "pddl-examples/dinner/problem.pddl"
+    )
+    actions = apla.available_actions(apla.initial_state)
+    for act in actions:
+        next_state = apla.transition(apla.initial_state, act)
+        next_node = Node(next_state, apla, heuristic_based=True)
+        assert "<PyCall.jlwrap PDDL.State" not in str(next_node) and "Set(Julog.Term" not in str(next_node)
+
+def test_stringified_path():
+    apla = AutomatedPlanner(
+        "pddl-examples/dinner/domain.pddl", "pddl-examples/dinner/problem.pddl"
+    )
+    actions = apla.available_actions(apla.initial_state)
+    path = []
+    for act in actions:
+        next_state = apla.transition(apla.initial_state, act)
+        path.append(Node(next_state, apla, heuristic_based=True))
+
+    assert "<PyCall.jlwrap PDDL.State" not in str(Path(path)) and "Set(Julog.Term" not in str(Path(path))