Start using a lot more unicode literals for Python 2

jedi/evaluate/context/function.py

@@ -39,7 +39,7 @@ class FunctionContext(use_metaclass(CachedMetaClass, TreeContext)):
     """
     Needed because of decorators. Decorators are evaluated here.
     """
-    api_type = 'function'
+    api_type = u'function'
 
     def __init__(self, evaluator, parent_context, funcdef):
         """ This should not be called directly """

jedi/evaluate/context/instance.py

@@ -39,7 +39,7 @@ class AbstractInstanceContext(Context):
     """
     This class is used to evaluate instances.
     """
-    api_type = 'instance'
+    api_type = u'instance'
     function_execution_cls = InstanceFunctionExecution
 
     def __init__(self, evaluator, parent_context, class_context, var_args):

jedi/evaluate/context/iterable.py

@@ -41,7 +41,7 @@ from jedi.parser_utils import get_comp_fors
 
 class AbstractIterable(Context):
     builtin_methods = {}
-    api_type = 'instance'
+    api_type = u'instance'
 
     def __init__(self, evaluator):
         super(AbstractIterable, self).__init__(evaluator, evaluator.builtins_module)

jedi/evaluate/context/klass.py

@@ -89,7 +89,7 @@ class ClassContext(use_metaclass(CachedMetaClass, TreeContext)):
     This class is not only important to extend `tree.Class`, it is also a
     important for descriptors (if the descriptor methods are evaluated or not).
     """
-    api_type = 'class'
+    api_type = u'class'
 
     def __init__(self, evaluator, parent_context, classdef):
         super(ClassContext, self).__init__(evaluator, parent_context=parent_context)

jedi/evaluate/context/module.py

@@ -18,7 +18,7 @@ class _ModuleAttributeName(AbstractNameDefinition):
     """
     For module attributes like __file__, __str__ and so on.
     """
-    api_type = 'instance'
+    api_type = u'instance'
 
     def __init__(self, parent_module, string_name):
         self.parent_context = parent_module
@@ -42,7 +42,7 @@ class ModuleName(ContextNameMixin, AbstractNameDefinition):
 
 
 class ModuleContext(use_metaclass(CachedMetaClass, TreeContext)):
-    api_type = 'module'
+    api_type = u'module'
     parent_context = None
 
     def __init__(self, evaluator, module_node, path):

jedi/evaluate/context/namespace.py

@@ -27,7 +27,7 @@ class ImplicitNamespaceContext(TreeContext):
     """
     Provides support for implicit namespace packages
     """
-    api_type = 'module'
+    api_type = u'module'
     parent_context = None
 
     def __init__(self, evaluator, fullname, paths):