KE-Chain integration - added Boolean output to kechain_check() method.

Former-commit-id: dda6ea3079653a170c8d68797a5863048d60ae32

pyKADMOS/sample/graph.py

@@ -5378,7 +5378,7 @@ class FundamentalProblemGraph(KadmosGraph):
             log_statements.append(['Nodes check', 'done!'])
         else:
             log_statements.append(['Nodes check', 'done with warnings!'])
-            return log_statements
+            return (nodes_check, log_statements)
         # Check problem formulation
         # Category B warnings
@@ -5455,7 +5455,7 @@ class FundamentalProblemGraph(KadmosGraph):
         if not formulation_check:
             log_statements.append(['Problem formulation check', 'done with warnings!'])
-            return log_statements
+            return (formulation_check, log_statements)
         # If the formulation_check is still True, then check whether the formulation makes sense.
         # Category C warnings
@@ -5633,9 +5633,9 @@ class FundamentalProblemGraph(KadmosGraph):
             log_statements.append(['Problem formulation check', 'done!'])
         else:
             log_statements.append(['Problem formulation check', 'done with warnings!'])
-            return log_statements
-        return log_statements
+            return (formulation_check, log_statements)
+        return (True, log_statements)
     def mark_as_design_variable(self, nodes):