src/sage/symbolic/callable.py: Fixup

sagemath · Oct 17, 2021 · b484d51 · b484d51
1 parent ee4bd52
commit b484d51
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/sage/symbolic/callable.py b/src/sage/symbolic/callable.py
@@ -307,7 +307,7 @@ def _coerce_map_from_(self, R):
             sage: g.parent().has_coerce_map_from(f.parent())
             True
         """
-        if isinstance(R, CallableSymbolicExpressionRing):
+        if isinstance(R, CallableSymbolicExpressionRing_class):
             args = self.arguments()
             if all(a in args for a in R.arguments()):
                 return True