From 6457ee93e17d32327bb03394e4da3993165f3043 Mon Sep 17 00:00:00 2001
From: Matthias Koeppe <mkoeppe@math.ucdavis.edu>
Date: Thu, 7 Oct 2021 18:55:16 -0700
Subject: [PATCH] src/sage/features/mip_backends.py: Fixup

---
 src/sage/features/mip_backends.py | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/src/sage/features/mip_backends.py b/src/sage/features/mip_backends.py
index e6e89e0acfb..a72c054a857 100644
--- a/src/sage/features/mip_backends.py
+++ b/src/sage/features/mip_backends.py
@@ -1,5 +1,5 @@
-from . import Feature
-from join_feature import JoinFeature
+from . import Feature, FeatureTestResult
+from .join_feature import JoinFeature
 
 
 class MIPBackend(Feature):
@@ -19,20 +19,20 @@ def _is_present(self):
 class CPLEX(MIPBackend):
 
     def __init__(self):
-        MIPBackend.__init__('cplex',
+        MIPBackend.__init__(self, 'cplex',
                             spkg='sage_numerical_backends_cplex')
 
 
 class Gurobi(MIPBackend):
 
     def __init__(self):
-        MIPBackend.__init__('gurobi',
+        MIPBackend.__init__(self, 'gurobi',
                             spkg='sage_numerical_backends_gurobi')
 
 
 class COIN(JoinFeature):
 
     def __init__(self):
-        JoinFeature.__init__('sage_numerical_backends_coin',
+        JoinFeature.__init__(self, 'sage_numerical_backends_coin',
                              [MIPBackend('coin')],
                              spkg='sage_numerical_backends_coin')