From 8d2ec6556e1ee208015f98acfae73d4b952fb424 Mon Sep 17 00:00:00 2001
From: Dave Halter <davidhalter88@gmail.com>
Date: Mon, 23 Jan 2017 00:36:57 +0100
Subject: [PATCH] Fix a Python 2.7 issue.

---
 jedi/parser/tokenize.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/jedi/parser/tokenize.py b/jedi/parser/tokenize.py
index 3080c5f5..81d4f9dd 100644
--- a/jedi/parser/tokenize.py
+++ b/jedi/parser/tokenize.py
@@ -95,6 +95,11 @@ def _all_string_prefixes():
     _valid_string_prefixes = ['b', 'r', 'u', 'br']
     if py_version >= 36:
         _valid_string_prefixes += ['f', 'fr']
+    if py_version <= 27:
+        # TODO this is actually not 100% valid. ur is valid in Python 2.7,
+        # while ru is not.
+        _valid_string_prefixes.append('ur')
+
     # if we add binary f-strings, add: ['fb', 'fbr']
     result = set([''])
     for prefix in _valid_string_prefixes: