diff --git a/python/examples/.cart_pulling.py.swp b/python/examples/.cart_pulling.py.swp
deleted file mode 100644
index b7c97396aebcf2267653da4c60596a8c43fb31f2..0000000000000000000000000000000000000000
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diff --git a/python/examples/cart_pulling.py b/python/examples/cart_pulling.py
index 66b33e798ae32937abc7fea661ea359407526c69..5687c6fe08ff5ad0c6bb92f2ddbe38f8b8b54e8a 100644
--- a/python/examples/cart_pulling.py
+++ b/python/examples/cart_pulling.py
@@ -117,7 +117,7 @@ def cartPullingControlLoop(args, robot : RobotManager, goal, solver_grasp, solve
     if robot.robot_name != "yumi":
         T_w_e = robot.getT_w_e()
     else:
-        T_w_e_l, T_w_e_right = robot.getT_w_e()
+        T_w_e_left, T_w_e_right = robot.getT_w_e()
 
     # we use binary as string representation (i don't want to deal with python's binary representation).
     # the reason for this is that then we don't have disgusting nested ifs
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