added better error messages for pushForward

Macaulay2 · May 12, 2024 · 1995bd4 · 1995bd4
1 parent 5162039
commit 1995bd4
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/M2/Macaulay2/m2/pushforward.m2 b/M2/Macaulay2/m2/pushforward.m2
@@ -83,9 +83,11 @@ updateComputation(PushforwardComputation, Module) := Module => options pushForwa
 
 pushForward(RingMap, Module) := Module => opts -> (f, M) -> (
     R := ring M;
-    assert( target f === R );
     strategy := opts.Strategy;
 
+    -- error checking
+    if target f =!= R then error "expected module over the target of the ring map";
+
     -- this logic runs the strategies in order, or the specified strategy
     computation := (opts, container) -> (
 	runHooks((pushForward, RingMap, Module), (opts, f, M), Strategy => strategy));