#!/usr/bin/env python #coding=utf- import rospy from std_msgs.msg import String i= def talker(): global i pub = rospy.Publisher() rospy.init_node('talker',anonymous=True) #rate = rospy.Rate() # 10hz #rospy.signal_shutdown("closed!") while not ro…

#!/usr/bin/env python #coding=utf- import rospy from std_msgs.msg import String def talker(): pub = rospy.Publisher() rospy.init_node('talker',anonymous=True) #rate = rospy.Rate() # 10hz while not rospy.is_shutdown(): rospy.loginfo("pub") pub.pu…

appium+Python真机运行测试demo的方法 一,    打开手机的USB调试模式 二,    连接手机到电脑 将手机用数据线连接到电脑,并授权USB调试模式.查看连接的效果,在cmd下运行命令:adb devices查看UDID,如下图所示: 如果有输出,就表示连接成功. 三,    启动Appium服务 方法一:cmd命令行启动 根据查到的UDID启动appium服务,运行命令: #>appium -a 127.0.0.1 -p 4723  –U  6207febc --no-res…

Combine Subscriber and Publisher in Python, ROS This article will describe an example of Combining Subscriber and Publisher in Python in ROS programming. This is very useful in ROS development. We will also discuss briefly how to build and modify a c…

发布者: #!/usr/bin/env python #coding=utf- import rospy from std_msgs.msg import String def talker():     pub = rospy.Publisher()     rospy.init_node('talker',anonymous=True)     rate = rospy.Rate() # 10hz     while not rospy.is_shutdown():         hell…

看了一些基础的 Python 新手教程后,深深感觉到 Python 的简洁与强大,这是我的第一个 Python Demo.下面是完整代码与执行截图. 代码: # encoding: utf-8 ''' @author: Techzero @email: techzero@163.com @time: 2014-4-30 下午1:31:04 ''' import os import sys import cPickle as p class Person: def __init__(self, n…

词云小demo jiebawordcloud 一 什么是词云? 由词汇组成类似云的彩色图形.“词云”就是对网络文本中出现频率较高的“关键词”予以视觉上的突出,形成“关键词云层”或“关键词渲染”,从而过滤掉大量的文本信息,使浏览网页者只要一眼扫过文本就可以领略文本的主旨. 二 有什么作用? 1.直观,高大上 2.可装逼,很潇洒 三 准备工作 1.导入包——jieba和wordcloud 命令:pip install jieba 命令:pip install wordcloud 备注:对于pycha…

建立文件夹hello_rospy,再在该目录下建立子目录src,cd到该src目录,运行如下命令创建工作包 catkin_create_pkg beginner_tutorials std_msgs rospy roscpp pkg代表所属包名,name是文件名,type是脚本文件名称,output指定输出到屏幕 <node pkg="xsens_drive" name="mtnode" type="mtnode.py" output=&q…

#!/usr/bin/env python import rospy import tf from tf.transformations import * from std_msgs.msg import String from geometry_msgs.msg import Pose from geometry_msgs.msg import Quaternion def get_pos(data): (roll, pitch, yaw) = euler_from_quaternion([d…

简单购物车Demo # version: python3.2.5 # author: 'FTL1012' # time: 2017/12/7 09:16 product_list = ( ['Java', 300], ['Oracle', 400], ['Mysql', 200], ['Python', 600], ['Shell', 150] ) money = input("充值金额为: ") shop_list = [] summary = 0 if money.isdigit(…