remove create_func....

core/problem.py

@@ -1,15 +1,27 @@
 from typing import Callable
+
 from config import ProblemConfig
-from state import State
+from .state import State
 
 
 class Problem:
 
-    def __init__(self, config: ProblemConfig):
+    def __init__(self, problem_config: ProblemConfig = ProblemConfig()):
+        self.config = problem_config
+
+    def evaluate(self, randkey, state: State, act_func: Callable, params):
         raise NotImplementedError
 
-    def setup(self, state=State()):
+    @property
+    def input_shape(self):
         raise NotImplementedError
 
-    def evaluate(self, state: State, act_func: Callable, params):
+    @property
+    def output_shape(self):
+        raise NotImplementedError
+
+    def show(self, randkey, state: State, act_func: Callable, params):
+        """
+        show how a genome perform in this problem
+        """
         raise NotImplementedError