diff --git a/jedi/evaluate/__init__.py b/jedi/evaluate/__init__.py
index 7f8a33b3..1a9ad571 100644
--- a/jedi/evaluate/__init__.py
+++ b/jedi/evaluate/__init__.py
@@ -62,8 +62,6 @@ only *evaluates* what needs to be *evaluated*. All the statements and modules
 that are not used are just being ignored.
 """
 
-import sys
-
 from parso.python import tree
 import parso
 
@@ -104,7 +102,6 @@ class Evaluator(object):
         self.analysis = []
         self.dynamic_params_depth = 0
         self.is_analysis = False
-        self.python_version = sys.version_info[:2]
         self.project = project
         self.access_cache = {}
         project.add_evaluator(self)
diff --git a/jedi/evaluate/compiled/subprocess/__init__.py b/jedi/evaluate/compiled/subprocess/__init__.py
index 153357a6..db791198 100644
--- a/jedi/evaluate/compiled/subprocess/__init__.py
+++ b/jedi/evaluate/compiled/subprocess/__init__.py
@@ -300,4 +300,8 @@ class AccessHandle(object):
 
     @memoize_method
     def _cached_results(self, name, *args, **kwargs):
+        if type(self._subprocess) == EvaluatorSubprocess:
+            print(name, args, kwargs,
+                self._subprocess.get_compiled_method_return(self.id, name, *args, **kwargs)
+            )
         return self._subprocess.get_compiled_method_return(self.id, name, *args, **kwargs)
diff --git a/jedi/evaluate/stdlib.py b/jedi/evaluate/stdlib.py
index 72e35650..f21a74ff 100644
--- a/jedi/evaluate/stdlib.py
+++ b/jedi/evaluate/stdlib.py
@@ -136,7 +136,7 @@ def builtins_next(evaluator, iterators, defaults):
     TODO this function is currently not used. It's a stab at implementing next
     in a different way than fake objects. This would be a bit more flexible.
     """
-    if evaluator.python_version[0] == 2:
+    if evaluator.environment.version_info.major == 2:
         name = 'next'
     else:
         name = '__next__'