From c0255ed7d82ed280389b774bd6758d542191a4ad Mon Sep 17 00:00:00 2001
From: Matthew Honnibal <honnibal@gmail.com>
Date: Thu, 9 Jul 2015 15:15:32 +0200
Subject: [PATCH] * Allow slice indexing in Doc.__getitem__, returning a Span
 object

---
 spacy/tokens.pyx | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/spacy/tokens.pyx b/spacy/tokens.pyx
index 22bf6e2dc..c15b92366 100644
--- a/spacy/tokens.pyx
+++ b/spacy/tokens.pyx
@@ -115,6 +115,12 @@ cdef class Doc:
         Returns:
             token (Token):
         """
+        if isinstance(i, slice):
+            if i.step is not None:
+                raise ValueError("Stepped slices not supported in Span objects."
+                                 "Try: list(doc)[start:stop:step] instead.")
+            return Span(self, i.start, i.stop, label=0)
+
         if i < 0:
             i = self.length + i
         bounds_check(i, self.length, PADDING)