Fix regexp deprecation warning

relf · Nov 22, 2023 · 9f8354b · 9f8354b
1 parent 15706a9
commit 9f8354b
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/pyDOE3/doe_factorial.py b/pyDOE3/doe_factorial.py
@@ -209,7 +209,7 @@ def fracfact(gen):
 
     """
     # Recognize letters and combinations
-    A = [item for item in re.split("\-|\s|\+", gen) if item]  # remove empty strings
+    A = [item for item in re.split(r"\-|\s|\+", gen) if item]  # remove empty strings
     C = [len(item) for item in A]
 
     # Indices of single letters (main factors)