From 5a56cff88ba679629050d05376efb362db5d4bd2 Mon Sep 17 00:00:00 2001
From: Felix Schurk <75752337+felixschurk@users.noreply.github.com>
Date: Sun, 31 Mar 2024 16:08:56 +0300
Subject: [PATCH] prefix regex strings to be treated as raw strings (#3322)

Source for documentation
https://docs.python.org/3/reference/lexical_analysis.html#string-and-bytes-literals.
Closes #3316.
---
 test/problems | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/test/problems b/test/problems
index 4da73f586..da3c2606f 100755
--- a/test/problems
+++ b/test/problems
@@ -52,8 +52,8 @@ if __name__ == "__main__":
     unexpected = defaultdict(int)
     passed = defaultdict(int)
 
-    file = re.compile("^# (?:./)?(\S+\.t)(?:\.exe)?$")
-    timestamp = re.compile("^# (\d+(?:\.\d+)?) ==>.*$")
+    file = re.compile(r"^# (?:./)?(\S+\.t)(?:\.exe)?$")
+    timestamp = re.compile(r"^# (\d+(?:\.\d+)?) ==>.*$")
 
     expected_fail = re.compile(r"^not ok.*?#\s*TODO", re.I)
     unexpected_pass = re.compile(r"^not ok .*?#\s*FIXED", re.I)