From 094974c3f5a8ecc5853e4c5a6f5c574a5a81686f Mon Sep 17 00:00:00 2001
From: Chen Li <meloli87@gmail.com>
Date: Tue, 19 Mar 2019 17:20:24 -0700
Subject: [PATCH] [re] Add attribute '_pattern_type' to re. (#2877)

This is only available before python 3.7 based on:
https://github.com/python/cpython/blob/3.6/Lib/re.py#L283
https://github.com/python/cpython/blob/3.7/Lib/re.py
---
 stdlib/3/re.pyi | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/stdlib/3/re.pyi b/stdlib/3/re.pyi
index 942f9bf6b..a303583cb 100644
--- a/stdlib/3/re.pyi
+++ b/stdlib/3/re.pyi
@@ -71,6 +71,10 @@ else:
     TEMPLATE = 0
     _FlagsType = int
 
+if sys.version_info < (3, 7):
+    # undocumented
+    _pattern_type = ...  # type: type
+
 class error(Exception): ...
 
 @overload