diff --git a/jedi/evaluate/compiled/fake.py b/jedi/evaluate/compiled/fake.py
index 482daef6..2c4c8150 100644
--- a/jedi/evaluate/compiled/fake.py
+++ b/jedi/evaluate/compiled/fake.py
@@ -110,4 +110,5 @@ def is_class_instance(obj):
     """Like inspect.* methods."""
     return not (inspect.isclass(obj) or inspect.ismodule(obj)
                 or inspect.isbuiltin(obj) or inspect.ismethod(obj)
-                or inspect.ismethoddescriptor(obj))
+                or inspect.ismethoddescriptor(obj) or inspect.iscode(obj)
+                or inspect.isgenerator(obj))
diff --git a/test/completion/generators.py b/test/completion/generators.py
index de0db53e..7a714f28 100644
--- a/test/completion/generators.py
+++ b/test/completion/generators.py
@@ -1,7 +1,6 @@
 # -----------------
 # yield statement
 # -----------------
-
 def gen():
     yield 1
     yield ""
@@ -13,6 +12,7 @@ next(gen_exe)
 #? int() str() list
 next(gen_exe, list)
 
+
 def gen_ret(value):
     yield value
 
@@ -22,6 +22,7 @@ next(gen_ret(1))
 #? []
 next(gen_ret())
 
+
 # -----------------
 # generators should not be indexable
 # -----------------
@@ -39,6 +40,7 @@ for a in get():
     #? int() str()
     a
 
+
 class Get():
     def __iter__(self):
         yield 1
@@ -63,6 +65,7 @@ g = iter([1.0])
 #? float()
 next(g)
 
+
 # -----------------
 # __next__
 # -----------------
@@ -90,6 +93,7 @@ for c in Counter(3, 8):
     #? int()
     print c
 
+
 # -----------------
 # tuples
 # -----------------
@@ -113,3 +117,9 @@ b
 # `close` is a method wrapper.
 #? ['__call__']
 gen().close.__call__
+
+#? ['co_consts']
+gen().gi_code.co_consts
+
+#? []
+gen.gi_code.co_consts