From ce10d320c42a3b081856f9255f382cfb9820c5a7 Mon Sep 17 00:00:00 2001
From: ines <ines@ines.io>
Date: Tue, 30 Jan 2018 16:09:37 +0100
Subject: [PATCH] Fix component check in self.factories (see #1911)

---
 spacy/language.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/spacy/language.py b/spacy/language.py
index d4204294e..1a60b2542 100644
--- a/spacy/language.py
+++ b/spacy/language.py
@@ -239,7 +239,7 @@ class Language(object):
         if not hasattr(component, '__call__'):
             msg = ("Not a valid pipeline component. Expected callable, but "
                    "got {}. ".format(repr(component)))
-            if component in self.factories.keys():
+            if component in self.factories:
                 msg += ("If you meant to add a built-in component, use "
                         "create_pipe: nlp.add_pipe(nlp.create_pipe('{}'))"
                         .format(component))