Fixed numpy warnings problems in evaluation and preev scripts

* Now the problem doesn't crash if a numpy warning is thrown
  in the evaluation scripts

Author: Ezetowers

MLC/Application.py

@@ -79,8 +79,6 @@ def _set_numpy_parameters(self):
         np.set_printoptions(threshold=np.inf)
         # Don't show scientific notation
         np.set_printoptions(suppress=True)
-        # Transform printed warnings to real warnings
-        np.seterr(all='raise')
 
     def go(self, to_generation, from_generation=None, display_best=False):
         """
@@ -155,9 +153,6 @@ def go(self, to_generation, from_generation=None, display_best=False):
         # emit app finish event
         self.__callbacks_manager.on_event(MLC_CALLBACKS.ON_FINISH)
 
-        # Return the numpy warning configuration to its original value
-        np.seterr(all='warn')
-
     def get_simulation(self):
         return self._simulation
 

MLC/Common/LispTreeExpr/LispTreeExpr.py

@@ -25,6 +25,7 @@ def __init__(self, expression):
                                "[EXPR_EXCEPTION] Root node was not found. Expression: {0}"
                                .format(expression))
 
+
 class TrailingTrashExprException(ExprException):
 
     def __init__(self, expression):
@@ -122,9 +123,9 @@ def check_operands(expr):
 
                 if expr[pos] == '(':
                     # The argument is another operator. Process it recursively
-                     argument_len = check_operands(expr[pos:])
-                     pos += argument_len
-                     if expr[pos] == ' ':
+                    argument_len = check_operands(expr[pos:])
+                    pos += argument_len
+                    if expr[pos] == ' ':
                         pos += 1
                 else:
                     # The argument is a number or a sensor
@@ -181,6 +182,8 @@ def visit_leaf_node(self, node):
         # First, replace the sensors
         visitor = Replace_Sensors_Visitor(sensor_replacement_list)
         self._root.accept(visitor)
+
+        # Transform printed warnings to real warnings
         return self._root.compute()
 
     def get_root_node(self):

MLC/Common/LispTreeExpr/OperationNodes.py

@@ -340,10 +340,15 @@ def simplify(self):
         return self
 
     def compute(self):
+        np.seterr(all='raise')
         if len(self._nodes) == 1:
-            return self._nodes[0].compute()
+            result = self._nodes[0].compute()
+            np.seterr(all='warn')
+            return result
 
-        return [node.compute() for node in self._nodes]
+        result = [node.compute() for node in self._nodes]
+        np.seterr(all='warn')
+        return result
 
     def formal(self):
         if len(self._nodes) == 1: