Add ^ and ? to escaped regexp characters

danielhuppmann · Apr 19, 2024 · 6b6574a · 6b6574a
1 parent c85d23d
commit 6b6574a
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/pyam/str.py b/pyam/str.py
@@ -4,7 +4,7 @@
 import pandas as pd
 from pandas.api.types import is_list_like
 
-REGEXP_CHARACTERS = r".+()[]{}|$"
+REGEXP_CHARACTERS = r".^$+?()[]{}|"
 
 
 def concat_with_pipe(x, *args, cols=None):