minor changes for clearer error message

sagemath · Jan 4, 2022 · 0071130 · 0071130
1 parent 6797e1d
commit 0071130
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/src/sage/modular/modform/element.py b/src/sage/modular/modform/element.py
@@ -414,7 +414,8 @@ def coefficient(self, n):
             sage: f.coefficient(4)
             -1472
         """
-        return self.q_expansion(n+1)[Integer(n)]
+        n = ZZ(n)
+        return self.q_expansion(n+1)[n]
 
     def padded_list(self, n):
         """