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001_talker_listener
listener.py
Go to the documentation of this file.
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#!/usr/bin/env python
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# Software License Agreement (BSD License)
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#
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# Copyright (c) 2008, Willow Garage, Inc.
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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#
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# * Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# * Redistributions in binary form must reproduce the above
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# copyright notice, this list of conditions and the following
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# disclaimer in the documentation and/or other materials provided
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# with the distribution.
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# * Neither the name of Willow Garage, Inc. nor the names of its
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# contributors may be used to endorse or promote products derived
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# from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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# Revision $Id$
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## Simple talker demo that listens to std_msgs/Strings published
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## to the 'chatter' topic
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import
rospy
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from
std_msgs.msg
import
String
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def
callback
(data):
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rospy.loginfo(rospy.get_caller_id() +
'I heard %s'
, data.data)
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def
listener
():
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# In ROS, nodes are uniquely named. If two nodes with the same
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# name are launched, the previous one is kicked off. The
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# anonymous=True flag means that rospy will choose a unique
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# name for our 'listener' node so that multiple listeners can
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# run simultaneously.
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rospy.init_node(
'listener'
, anonymous=
True
)
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rospy.Subscriber(
'chatter'
, String, callback)
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# spin() simply keeps python from exiting until this node is stopped
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rospy.spin()
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if
__name__ ==
'__main__'
:
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listener
()
listener.callback
def callback(data)
Definition:
listener.py:42
msg
listener.listener
def listener()
Definition:
listener.py:45
listener
Definition:
listener.py:1
rospy_tutorials
Author(s): Ken Conley
autogenerated on Fri Jun 7 2019 22:01:45