added examples of using std ros message in python

fc_ros_tutorials/demo_ros_messages/ros_python_std_messages_examples/CMakeLists.txt

@@ -0,0 +1,16 @@
+cmake_minimum_required(VERSION 2.8.3)
+project(ros_python_std_messages_examples)
+
+find_package(catkin REQUIRED COMPONENTS
+  rospy
+  std_msgs
+)
+
+catkin_python_setup()
+
+catkin_package(
+  CATKIN_DEPENDS 
+    rospy 
+    std_msgs
+
+)

fc_ros_tutorials/demo_ros_messages/ros_python_std_messages_examples/package.xml

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+<?xml version="1.0"?>
+<package>
+  <name>ros_python_std_messages_examples</name>
+  <version>0.1.0</version>
+  <description>The ros_python_std_messages_examples package</description>
+
+  <maintainer email="[email protected]">shehzad Ahmed</maintainer>
+
+  <license>GPLv3</license>
+
+  <buildtool_depend>catkin</buildtool_depend>
+  <build_depend>rospy</build_depend>
+  <build_depend>std_msgs</build_depend>
+  <run_depend>rospy</run_depend>
+  <run_depend>std_msgs</run_depend>
+</package>

fc_ros_tutorials/demo_ros_messages/ros_python_std_messages_examples/ros/scripts/std_messages_examples_node

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+#!/usr/bin/env python
+"""
+This script is a simple python node which imports
+source code of std_messages_examples.
+"""
+#-*- encoding: utf-8 -*-
+__author__ = 'shehzad ahmed'
+
+import ros_python_std_messages_examples_ros.std_messages_examples
+
+if __name__ == '__main__':
+    ros_python_std_messages_examples_ros.std_messages_examples.main()

fc_ros_tutorials/demo_ros_messages/ros_python_std_messages_examples/ros/src/ros_python_std_messages_examples_ros/demo_class.py

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+#!/usr/bin/env python
+'''
+This script demostrates the way of filling 
+ros std_msgs by giving few examples.
+'''
+import rospy
+from std_msgs.msg import Bool
+from std_msgs.msg import Float32
+from std_msgs.msg import Int32
+from std_msgs.msg import String
+
+
+class DemoClass():
+    def __init__(self):
+        self.prepare_std_msg()
+
+    def prepare_std_msg(self):
+        rospy.loginfo("Preparing std_msgs......")
+        '''
+        Fill Bool message
+        '''
+        bool_msg = Bool()
+
+        bool_msg.data = False
+
+        '''
+        Fill Float32 message
+        '''
+        float32_msg = Float32()
+
+        float32_msg.data = 1.0
+
+        '''
+        Fill Int32 message
+        Please, do it your self for practice
+        '''
+
+        '''
+        Fill String message
+        Please, do it your self for practice
+        '''
+        rospy.loginfo("std_msgs preparation done......")

fc_ros_tutorials/demo_ros_messages/ros_python_std_messages_examples/ros/src/ros_python_std_messages_examples_ros/std_messages_examples.py

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+#!/usr/bin/env python
+"""
+This script demostrates the way of filling 
+ros std_msgs by giving few examples.
+"""
+#-*- encoding: utf-8 -*-
+__author__ = 'shehzad ahmed'
+import rospy
+from demo_class import *
+
+def initlize_node():
+    '''
+    Initilize node and spin which simply keeps python 
+    from exiting until this node is stopped
+    '''
+    rospy.init_node('std_messages_examples_node', anonymous=False)
+    rospy.loginfo("std_messages_examples_node is now running")
+    demo_class1 = DemoClass()
+    rospy.spin()
+
+def  main():
+    initlize_node()

fc_ros_tutorials/demo_ros_messages/ros_python_std_messages_examples/setup.py

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+#!/usr/bin/env python
+
+from distutils.core import setup
+from catkin_pkg.python_setup import generate_distutils_setup
+
+d = generate_distutils_setup(
+    packages=['ros_python_std_messages_examples_ros'],
+    package_dir={'ros_python_std_messages_examples_ros': 'ros/src'}
+)
+
+setup(**d)