From 71c7ba41452a397bda9f6ebf41e34700cee7c421 Mon Sep 17 00:00:00 2001
From: Christoph Burgdorf <christoph.burgdorf@gmail.com>
Date: Mon, 2 Sep 2019 09:39:41 +0200
Subject: [PATCH] Fix deprecated regex syntax

---
 setup.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/setup.py b/setup.py
index f1a509bc3e..382b160c5b 100644
--- a/setup.py
+++ b/setup.py
@@ -125,7 +125,7 @@ def to_package_name(dependency):
     """
     Turn a dependency (e.g. "blspy>=0.1.8,<1") into the package name (e.g. "blspy")
     """
-    return re.sub("[!=<>](.|)+", "", dependency)
+    return re.sub(r"[!=<>](.|)+", "", dependency)
 
 
 def filter_dependencies(package_list, *package_name):