Fix deprecation warnings due to invalid escape sequences. (#489)

petl-developers · Jun 1, 2020 · 2f959d4 · 2f959d4
1 parent 068386c
commit 2f959d4
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/petl/util/base.py b/petl/util/base.py
@@ -659,7 +659,7 @@ def expr(s):
 
     """
 
-    prog = re.compile('\{([^}]+)\}')
+    prog = re.compile(r'\{([^}]+)\}')
 
     def repl(matchobj):
         return "rec['%s']" % matchobj.group(1)