version 0.0.1

pina/problem/abstract_problem.py

@@ -4,9 +4,23 @@ from abc import ABCMeta, abstractmethod
 class AbstractProblem(metaclass=ABCMeta):
 
     @property
-    @abstractmethod
     def input_variables(self):
-        pass
+        variables = []
+
+        if hasattr(self, 'spatial_variables'):
+            variables += self.spatial_variables
+        if hasattr(self, 'temporal_variable'):
+            variables += self.temporal_variable
+        if hasattr(self, 'parameters'):
+            variables += self.parameters
+        if hasattr(self, 'custom_variables'):
+            variables += self.custom_variables
+
+        return variables
+
+    @input_variables.setter
+    def input_variables(self, variables):
+        raise NotImplementedError
 
     @property
     @abstractmethod