python - 随笔分类(第23页) - anobscureretreat

matplot 绘制折线图

摘要：#coding=utf-8 import matplotlib.pyplot as pltx_data = ['2011','2012','2013','2014','2015','2016','2017']y_data = [58000,60200,63000,71000,84000,90500, 阅读全文

posted @ 2019-07-09 16:19 anobscureretreat 阅读(389) 评论(0) 推荐(0)

ros python 构造 pose

摘要：#!/usr/bin/env python import numpy as npfrom geometry_msgs.msg import Pose, Point, Quaternion, Twistfrom tf.transformations import quaternion_from_eul 阅读全文

posted @ 2019-07-09 16:15 anobscureretreat 阅读(709) 评论(0) 推荐(0)

ros python 四元数转欧拉角

摘要：import sysimport math w = -0.99114048481x = -0.00530699081719y = 0.00178255140781z = -0.133612662554 r = math.atan2(2*(w*x+y*z),1-2*(x*x+y*y))p = math 阅读全文

posted @ 2019-07-09 16:06 anobscureretreat 阅读(2666) 评论(0) 推荐(0)

Python geometry_msgs.msg.PoseStamped() Examples

摘要：https://www.programcreek.com/python/example/70252/geometry_msgs.msg.PoseStampedhttps://programtalk.com/python-examples/ 阅读全文

posted @ 2019-07-03 21:32 anobscureretreat 阅读(531) 评论(0) 推荐(0)

python smbus IOError: [Errno 2] No such file or directory

摘要：1.打开配置文件打开以下选项 ctrl + o 保存 ctrl + x 退出 2.刷新配置文件 3.打开 I2c选项 4.重启 5.再次运行参考： https://www.raspberrypi.org/forums/viewtopic.php?t=100189 阅读全文

posted @ 2019-06-30 23:46 anobscureretreat 阅读(1189) 评论(0) 推荐(0)

python 查看某个模块都有什么方法

摘要：1.看官方文档 https://docs.python.org/3/search.html?q=os&check_keywords=yes&area=default 2.看源码 3.dir() import requests,os,randomprint(dir(random)) 阅读全文

posted @ 2019-06-30 23:41 anobscureretreat 阅读(1882) 评论(0) 推荐(0)

python 根据数组生成图片

摘要：效果图阅读全文

posted @ 2019-06-27 23:48 anobscureretreat 阅读(4641) 评论(0) 推荐(0)

python 迷宫问题

摘要：# -*- coding:utf-8 -*- from collections import deque # 引入队列 maze = [ [1,1,1,1,1,1,1,1,1,1], [1,0,0,1,0,0,0,1,0,1], [1,0,0,1,0,0,0,1,0,1], [1,0,0,0,0,1,1,0,0,1], [1,0,1,1,1... 阅读全文

posted @ 2019-06-27 23:44 anobscureretreat 阅读(1611) 评论(0) 推荐(0)

python pillow 处理图片

摘要：demo1 demo2 参考：https://blog.csdn.net/Hanging_Gardens/article/details/79014160 阅读全文

posted @ 2019-06-27 23:38 anobscureretreat 阅读(613) 评论(0) 推荐(0)

python eval的用法

摘要：>>>x = 7 >>> eval( '3 * x' ) 21 >>> eval('pow(2,2)') 4 >>> eval('2 + 2') 4 >>> n=81 >>> eval("n + 4") 85 参考： https://www.runoob.com/python/python-func-eval.html 阅读全文

posted @ 2019-06-27 23:38 anobscureretreat 阅读(179) 评论(0) 推荐(0)

python pillow 绘制图片

摘要：demo1 demo2 参考：https://blog.csdn.net/caobin0825/article/details/80338438 阅读全文

posted @ 2019-06-27 23:35 anobscureretreat 阅读(1698) 评论(0) 推荐(0)

python 根据时间戳获取秒🐱

摘要：print("当前时间： ",time.strftime('%Y.%m.%d %H:%M:%S ',time.localtime(time.time()))) import time import datetime t = time.time() print (t) #原始时间数据 print (int(t)) ... 阅读全文

posted @ 2019-06-27 23:29 anobscureretreat 阅读(606) 评论(0) 推荐(0)

python 查看安装的库的路径（找site-packages）

摘要：import sysprint(sys.path) orwhich pythonwhich python3 阅读全文

posted @ 2019-06-27 23:28 anobscureretreat 阅读(1331) 评论(0) 推荐(0)

python request下载文件时，显示进度以及网速

摘要：输出阅读全文

posted @ 2019-06-25 13:41 anobscureretreat 阅读(5504) 评论(0) 推荐(1)

python 时间等待

摘要：输出阅读全文

posted @ 2019-06-25 11:10 anobscureretreat 阅读(4918) 评论(0) 推荐(0)

python threading多线程

摘要：输出阅读全文

posted @ 2019-06-24 09:58 anobscureretreat 阅读(148) 评论(0) 推荐(0)

python 读写json数据

摘要：#coding=utf-8 import... 阅读全文

posted @ 2019-06-21 11:22 anobscureretreat 阅读(291) 评论(0) 推荐(0)

python 多线程_thread

摘要：demo2 阅读全文

posted @ 2019-06-21 09:32 anobscureretreat 阅读(147) 评论(0) 推荐(0)

python 多进程multiprocessing

摘要：from multiprocessing import Process import time def print_time(threadName, delay, iterations): start = int(time.time()) for i in range(0,iterations): time.sleep(delay) seco... 阅读全文

posted @ 2019-06-20 20:48 anobscureretreat 阅读(129) 评论(0) 推荐(0)

python 将IP地址转换成打包后的32位格式

摘要：python 2.7 输出阅读全文

posted @ 2019-06-16 14:42 anobscureretreat 阅读(403) 评论(0) 推荐(0)

F

随笔分类 - python