[Examples] Update python example

examples/python/load-romeo.py

 import pinocchio as pin
 from pinocchio.romeo_wrapper import RomeoWrapper
 
+DISPLAY = False
+
 ## Load Romeo with RomeoWrapper
 import os
 current_path = os.getcwd()
@@ -8,8 +10,8 @@ current_path = os.getcwd()
 # The model of Romeo is contained in the path PINOCCHIO_GIT_REPOSITORY/models/romeo
 model_path = current_path + "/" + "../../models/romeo"
 mesh_dir = model_path
-urdf_filename = "romeo.urdf"
-urdf_model_path = model_path + "/urdf/" + urdf_filename
+urdf_filename = "romeo_small.urdf"
+urdf_model_path = model_path + "/romeo_description/urdf/" + urdf_filename
 
 robot = RomeoWrapper(urdf_model_path, [mesh_dir])
 
@@ -22,3 +24,17 @@ q0 = robot.q0
 com = robot.com(q0)
 # This last command is similar to
 com2 = pin.centerOfMass(model,data,q0)
+
+## load model into gepetto-gui
+if DISPLAY:
+  import gepetto.corbaserver
+
+  cl = gepetto.corbaserver.Client()
+  gui = cl.gui
+  if gui.nodeExists("world"):
+    gui.deleteNode("world","ON")
+
+  robot.initDisplay(loadModel=False)
+  robot.loadDisplayModel("pinocchio")
+  robot.display(robot.q0)
+  gui = robot.viewer.gui