src/sage/ext/fast_callable.pyx: Remove use of is_CallableSymbolicExpr…

…ession
sagemath · Oct 17, 2021 · 4bc059b · 4bc059b
1 parent fad87c0
commit 4bc059b
Showing 1 changed file with 1 addition and 3 deletions.
diff --git a/src/sage/ext/fast_callable.pyx b/src/sage/ext/fast_callable.pyx
@@ -428,13 +428,11 @@ def fast_callable(x, domain=None, vars=None,
         et = x
         vars = et._etb._vars
     else:
-        from sage.symbolic.callable import is_CallableSymbolicExpression
-
         if not vars:
             # fast_float passes empty list/tuple
             vars = None
 
-        if is_CallableSymbolicExpression(x):
+        if isinstance(x, Expression_abc) and x.is_callable():
             if vars is None:
                 vars = x.arguments()
             if expect_one_var and len(vars) != 1: