Relative import fixes.

interface/HUTN/test/constructor_compilation_action_language/test_compile.py

@@ -1,5 +1,9 @@
 import unittest
-import interface.HUTN.test.util as util
+
+try:
+    import util  # needed for Python2
+except ImportError:
+    import interface.HUTN.test.constructor_compilation_action_language.util as util
 
 from interface.HUTN.hutn_compiler.compiler import main
 import json

interface/HUTN/test/grammar_action_language/test_invalids.py

@@ -1,5 +1,9 @@
 import unittest
-import interface.HUTN.test.util as util
+
+try:
+    import util  # needed for Python2
+except ImportError:
+    import interface.HUTN.test.grammar_action_language.util as util
 
 from interface.HUTN.hutn_compiler.compiler import main
 

interface/HUTN/test/grammar_action_language/test_valids.py

@@ -1,5 +1,9 @@
 import unittest
-import interface.HUTN.test.util as util
+
+try:
+    import util  # needed for Python2
+except ImportError:
+    import interface.HUTN.test.grammar_action_language.util as util
 
 from interface.HUTN.hutn_compiler.compiler import main
 

interface/HUTN/test/modelling_language/test_compile.py

@@ -1,5 +1,8 @@
 import unittest
-import interface.HUTN.test.util as util
+try:
+    import util #needed for Python2
+except ImportError:
+    import interface.HUTN.test.modelling_language.util as util
 
 from interface.HUTN.hutn_compiler.compiler import main
 import json