Update helpers.py (#510)

Check both *lpar* and *rpar* here to not be instances of *Suppress*.
pyparsing · Sep 1, 2023 · fa3e16e · fa3e16e
1 parent c09eb6e
commit fa3e16e
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/pyparsing/helpers.py b/pyparsing/helpers.py
@@ -777,7 +777,7 @@ def parseImpl(self, instring, loc, doActions=True):
         rpar = Suppress(rpar)
 
     # if lpar and rpar are not suppressed, wrap in group
-    if not (isinstance(rpar, Suppress) and isinstance(rpar, Suppress)):
+    if not (isinstance(lpar, Suppress) and isinstance(rpar, Suppress)):
         lastExpr = base_expr | Group(lpar + ret + rpar)
     else:
         lastExpr = base_expr | (lpar + ret + rpar)