Rosservice only works on shell and not on rospy

asked 2019-11-22 00:42:09 -0500

abcamiletto
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Hi, It's my first post here so i hope everything's ok.

I have my robot "snake" in gazebo simulation already spawned and if i type in the shell

rosservice call /gazebo/delete_model "model_name: 'snake'"

it actually delete the snake. But if i run a python script with the following code:

delsnake = DeleteModel()
delsnake.model_name = 'snake'
delete = rospy.ServiceProxy('delete_model', DeleteModel)
delete(delsnake)

or even

delete = rospy.ServiceProxy('delete_model', DeleteModel)
delete(model_name = 'snake')

which should be equivalent the terminal tells me:

raise ServiceException("service [%s] unavailable"%self.resolved_name)
rospy.service.ServiceException: service [/delete_model] unavailable

But the service is avaible! I cannot find a solution, the only thing i could do is actually run the command line from the python script but i don't think that's the way thing should go.

Can you help me please?

Thanks in advace!

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# you can also do this before : # rospy.wait_for_service("/gazebo/delete_model") to ensure the service is available delete = rospy.ServiceProxy("/gazebo/delete_model", DeleteModel) try: delete(model_name = "snake") # or simply delete("snake") except rospy.ServiceException as exc: print("Service did not process request: " + str(exc))

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Mhhh with your code now it tells me:

File "/home/andrea/Desktop/simsnake/src/killnspawn/launch/kns.py", line 12, in <module>
delete = rospy.ServiceProxy("/gazebo/delete_model", DeleteModel)
NameError: name 'DeleteModel' is not defined

abcamiletto ( 2019-11-22 10:54:01 -0500 )edit

Have you still the import at the beginning ?

from gazebo_msgs import DeleteModel

Delb ( 2019-11-22 18:24:57 -0500 )edit

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Rosservice only works on shell and not on rospy

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