Import missed a get_set_vars function, which caused an error with user_stmt checking -> fixes issue 16 of jedi-vim

test/completion/imports.py

@@ -86,6 +86,9 @@ from keyword import kwlist, \
 #? ['kwlist']
 kwlist
 
+#? []
+from keyword import not_existing1, not_existing2
+
 from tokenize import io
 tokenize.generate_tokens