exit from rospy.is_shutdown(): without shutdown node

asked 2018-12-20 04:55:03 -0500

leogeo
31 ●8 ●11 ●10

updated 2019-01-08 14:18:03 -0500

jayess
6155 ●26 ●85 ●92

i am using while not rospy.is_shutdown(): loop in a function but i can't exit from the function

how i can exit from while not rospy.is_shutdown() loop without shutting down the node i have issue to exit from function()

def function():
   ..
   while not rospy.is_shutdown():
          ..  
           ..



def clbk_laser(msg):
    ..
    .. 
    function()
    ..
    ..

def main():
    rate = rospy.Rate(20)
    while not rospy.is_shutdown():
              ..  
              ..
...
...
if __name__ == '__main__':
    main()

Update

i tried many ways like exit break return .. without result get out from while not rospy.is_shutdown() loop i think is different because using sys.exit(0) i shutdown the node and return or break do nothing i keep inside the loop

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Comments

Can you provide your code and more details about what you want to achieve please ? This loop can only be exited with CTRL-C.

Delb ( 2018-12-20 05:02:48 -0500 )edit

1

Thank you for the edit. Why are you using a while not rospy.is_shutdown() loop if you want to exit it without shutting down the node ? You should use something like :

condition = 0
while (condition == 0)
    #do what you want
    if another_condition
        condition = 1

Delb ( 2018-12-21 01:56:54 -0500 )edit

Update : Can you also update the code when using break ? That should exit the loop if correctly used. Also if you could detail why you are using a while not rospy.is_shutdown inside a function called in a callback could be helpful because that's not a common thing to do.

Delb ( 2019-01-09 02:21:55 -0500 )edit

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