src/sage/modular/hecke/algebra.py: Replace use of is_HeckeAlgebraElem…

…ent, is_HeckeOperator
vbraun · May 13, 2024 · 554bcc2 · 554bcc2
1 parent 344e2b3
commit 554bcc2
Showing 1 changed file with 3 additions and 3 deletions.
diff --git a/src/sage/modular/hecke/algebra.py b/src/sage/modular/hecke/algebra.py
@@ -252,7 +252,7 @@ def _element_constructor_(self, x, check=True):
             TypeError: Don't know how to construct an element of Anemic Hecke algebra acting on Modular Symbols space of dimension 3 for Gamma_0(11) of weight 2 with sign 0 over Rational Field from Hecke operator T_11 on Modular Symbols space of dimension 3 for Gamma_0(11) of weight 2 with sign 0 over Rational Field
 
         """
-        from .hecke_operator import HeckeAlgebraElement_matrix, HeckeOperator, is_HeckeOperator, is_HeckeAlgebraElement
+        from .hecke_operator import HeckeAlgebraElement_matrix, HeckeOperator, HeckeAlgebraElement
 
         if not isinstance(x, Element):
             x = self.base_ring()(x)
@@ -265,13 +265,13 @@ def _element_constructor_(self, x, check=True):
         if parent is self:
             return x
 
-        if is_HeckeOperator(x):
+        if isinstance(x, HeckeOperator):
             if x.parent() == self \
                     or (not self.is_anemic() and x.parent() == self.anemic_subalgebra()) \
                     or (self.is_anemic() and x.parent().anemic_subalgebra() == self and gcd(x.index(), self.level()) == 1):
                 return HeckeOperator(self, x.index())
 
-        if is_HeckeAlgebraElement(x):
+        if isinstance(x, HeckeAlgebraElement):
             if x.parent() == self or (not self.is_anemic() and x.parent() == self.anemic_subalgebra()):
                 if x.parent().module().basis_matrix() == self.module().basis_matrix():
                     return HeckeAlgebraElement_matrix(self, x.matrix())