From: Michael Orlitzky <michael@orlitzky.com>
Date: Fri, 12 Mar 2021 14:29:33 +0000 (-0500)
Subject: eja: fix recent hasattr() commit.
X-Git-Url: https://gitweb.michael.orlitzky.com/?a=commitdiff_plain;h=3f49e3bf2b85b1918c1abb0e8973a6f203dabc86;p=sage.d.git

eja: fix recent hasattr() commit.
---

diff --git a/mjo/eja/eja_algebra.py b/mjo/eja/eja_algebra.py
index 4a1c6f9..e6aba20 100644
--- a/mjo/eja/eja_algebra.py
+++ b/mjo/eja/eja_algebra.py
@@ -779,8 +779,10 @@ class FiniteDimensionalEJA(CombinatorialFreeModule):
             if elt.parent().superalgebra() == self:
                 return elt.superalgebra_element()
 
-        if hasattr(elt, 'column'):
-            # Convert a vector into a column-matrix...
+        if hasattr(elt, 'sparse_vector'):
+            # Convert a vector into a column-matrix. We check for
+            # "sparse_vector" and not "column" because matrices also
+            # have a "column" method.
             elt = elt.column()
 
         if elt not in self.matrix_space():