Python 2.7.10 (default, Oct 14 2015, 16:09:02) [GCC 5.2.1 20151010] on linux2 Type "copyright", "credits" or "license()" for more information. >>> def function():定义函数 ptintf("run") >>> function() T…

Python Function Note #汉诺塔问题Python实现 def my_move(n, a, b, c): if n == 1: print(a + ' --> ' + c) else: my_move(n-1, a, c, b)#将前n-1个盘子从a放到b my_move(1, a, b, c)#将最下面的盘子从a放到c my_move(n-1, b, a, c)#将b上的n-1个盘子放到c上 return #杨辉三角Python实现 def my_triangles(max):…

This is a tutorial of how to use *args and **kwargs For defining the default value of arguments that is not assigned in key words when calling the function: def func(**keywargs): if 'my_word' not in keywargs: word = 'default_msg' print(word) else: wo…

Python 2.7.10 (default, Oct 14 2015, 16:09:02) [GCC 5.2.1 20151010] on linux2 Type "copyright", "credits" or "license()" for more information. >>> help(list) Help on class list in module __builtin__: class list(objec…

将python用于基本的科学计算,能完全替代matlab.就最近写的一个物理模型程序来看,用python建立的物理模型的可控性,代码的层次性都优于matlab,只不过python没有matlab那样的界面,所有的操作都需要代码来实现.现关于python的函数式编程做出以下总结. 问题一:物理公式里有很多的小公式,一个一个的def太麻烦了,有什么好的解决办法? 应对以上问题,匿名函数是一个方便的工具.python里面匿名函数的关键字是lambda.如下 一个函数为f(x,y)=sin(x+y)+x…

addWidget self.lcd = QLCDNumber() grid.addWidget(self.lcd,0,0,3,0) grid.setSpacing(10) void QGridLayout::addWidget(QWidget * widget, int fromRow, int fromColumn, int rowSpan, int columnSpan, Qt::Alignment alignment = 0)This is an overloaded function.…

*args 表示任意个普通参数,调用的时候自动组装为一个tuple **kwags 表示任意个字典类型参数, 调用的时候自动组装成一个dict args和kwags是两个约定俗成的用法. 变长参数可以用*args来解包 >>> args = [3,6]>>> list(range(*args))[3, 4, 5] >>> def f1(*args, **kwargs):...    print args, kwargs...>>> l…

vscode主题开发教程 https://blog.csdn.net/Suwanqing_su/article/details/105945290 个人配置结果 主题代码 到Vscode放插件的目录中随便找一个主题插件点进去到themes文件夹,里面有一个json文件打开,将以下代码复制即可 /* 此主题为个人结合eyeshield的colors和Night owl light的tokenColors结合所得 */ { "type": "light", "…

1. get files in the current directory with the assum that the directory is like this: a .py |----dataFolder |----Myfolder |----1.csv , 2.csv, 3.csv # a.py 1 def getFileList(): file_list = [] cur_dir = os.getcwd() for folder in os.walk(cur_dir).next()…

#Practice Exercises for Logic and Conditionals # Solve each of the practice exercises below. # 1.Write a Python function is_even that takes as input the parameter number (an integer) and # returns True if number is even and False if number is odd. #…

# Practice Exercises for Functions # Solve each of the practice exercises below. # 1.Write a Python function miles_to_feet that takes a parameter miles and # returns the number of feet in miles miles. def miles_to_feet(miles): feet = miles * 5280 ret…

存储过程: delimiter | ),)) begin select * from tb_test where mid = imid and user = iuser; end; | delimiter ; python调用: import mysql.connector cnx = mysql.connector.connect( user='test',password='xxxx',host='192.168.10.194',database='test') #cnx._open_con…

from stack overflow:http://stackoverflow.com/questions/100003/what-is-a-metaclass-in-python Classes as objects Before understanding metaclasses, you need to master classes in Python. And Python has a very peculiar idea of what classes are, borrowed f…

#cnblogs_post_body h2 { background: linear-gradient(to bottom, #18c0ff 0%,#0c7eff 100%); color: #fff; padding: 3px; margin: 10px 0px; font-family: "微软雅黑", "宋体", "黑体", Arial } Python第三章__函数式编程.递归.闭包 欢迎加入Linux_Python学习群  群号:478…

So if you are looking forward to a Python Interview, here are some most probable questions to be asked in the interview that will help: What is the difference between deep and shallow copy? Write a program to find out the name of an object in python.…

From: http://interactivepython.org/courselib/static/pythonds/Introduction/GettingStartedwithData.html Built-in Collection Data Types Python has a number of very powerful built-in collection classes. Lists, strings, and tuples are ordered collections…

在看python的API的时候,发现了一个有趣的东东,即:python的方法(函数)注解(Function Annotation) 原文: 4.7.7. Function Annotations Function annotations are completely optional, arbitrary metadata information about user-defined functions. Neither Python itself nor the standard librar…

inspect模块用来检查对象的类型(函数,属性,类,抽象基类,方法,模块等等) 是一个封装好的非常有用的模块. ]) ]: cls = :]: content = ] = lines[].lstrip() , ]: lines.pop() ]: lines.pop() ] + importlib.machinery.SOURCE_SUFFIXES[]) ] == ), i)) ][] : ][:] == ] == ] == : indent = indentsize(lines[lnum])…

python 2.7 os 常用操作 官方document链接 文件和目录 os.access(path, mode) 读写权限测试 应用: try: fp = open("myfile") except IOError as e: if e.errno == errno.EACCES: return "some default data" # Not a permission error. raise else: with fp: return fp.read()…

1. 什么是Hook 经常会听到钩子函数(hook function)这个概念,最近在看目标检测开源框架mmdetection,里面也出现大量Hook的编程方式,那到底什么是hook?hook的作用是什么? what is hook ?钩子hook,顾名思义,可以理解是一个挂钩,作用是有需要的时候挂一个东西上去.具体的解释是:钩子函数是把我们自己实现的hook函数在某一时刻挂接到目标挂载点上. hook函数的作用 举个例子,hook的概念在windows桌面软件开发很常见,特别是各种事件触发的机…

>>> help(twain) Help on module twain: NAME twain - Created on Sep 4, 2011 DESCRIPTION @author: misha CLASSES _ctypes.Structure(_ctypes._CData) BITMAPINFOHEADER MSG TW_ARRAY TW_CAPABILITY TW_ENTRYPOINT TW_ENUMERATION TW_EVENT TW_FIX32 TW_FRAME TW_…

Python黑帽编程 3.2 ARP监控 在第3.1节<ARP欺骗>中,我们学习了ARP的基本原理,使用Python实现了我们自己的ARP欺骗工具.在上一节的基础上,我们来实现一个ARP监控程序,该程序存储局域网中所有的IP和MAC对应关系,如果有新加入的机器会动态添加到列表中,如果有机器的ARP记录发生了变化,会发出警告. 实现这个程序的关键,只有一点,就是监听网络中ARP数据包.Scapy中的sniff方法可以满足我们对ARP监听的需求. 3.2.1 sniff方法 sniff方法是用来嗅…

Python灰帽编程 3.1 ARP欺骗 ARP欺骗是一种在局域网中常用的攻击手段,目的是让局域网中指定的(或全部)的目标机器的数据包都通过攻击者主机进行转发,是实现中间人攻击的常用手段,从而实现数据监听.篡改.重放.钓鱼等攻击方式. 在进行ARP欺骗的编码实验之前,我们有必要了解下ARP和ARP欺骗的原理. 3.1.1 ARP和ARP欺骗原理 ARP是地址转换协议(Address Resolution Protocol)的英文缩写,它是一个链路层协议,工作在OSI 模型的第二层,在本层和硬件接…

Python相关文档0.1. Python标准文档0.2. Python实用大全0.3. 迷人的Python0.4. 深入理解Python0.5. Python扩展库网址 http://pypi.python.org/     Python官方网址 http://www.python.org/ 列表 用[]括起来,里面可以是数值或bool或字符串 L = [95.5,85,59,True,"Last"] print L[0] print L[2] print L[1] print L…

问:udf在sparksql 里面的作用是什么呢? 答:oracle的存储过程会有用到定义函数,那么现在udf就相当于一个在sparksql用到的函数定义: 第二个问题udf是怎么实现的呢? registerFunction(name, f,  returnType=StringType) name – name of the UDF f – python function returnType – a DataType object 首先我们从官网的例子去理解: >>> from py…

网络数据监听和过滤 课程的实验环境如下: •      操作系统:kali Linux 2.0 •      编程工具:Wing IDE •      Python版本:2.7.9 •      涉及到的主要python模块:pypcap,dpkt,scapy,scapy-http 涉及到的几个python网络抓包和分析的模块,dpkt和scapy在kali linux 2.0 中默认已经被安装,如果你的系统中没有需要手动安装一下,下面是软件包安装的简单说明. 在kali下安装pypcap需要两…

C++中调用Python脚本的意义就不讲了,至少你可以把它当成文本形式的动态链接库, 需要的时候还可以改一改,只要不改变接口, C++的程序一旦编译好了,再改就没那么方便了 先看Python的代码 代码: #test function def add(a,b): print "in python function add" print "a = " + str(a) print "b = " + str(b) print "ret =…

Introduction ffpython is a C++ lib, which is to simplify tasks that embed Python and extend Python. As the author, I am a developer for MMO server. Mainly I use C++ to implement part that needs to response user's requests in realtime, while other log…

http://codextechnicanum.blogspot.com/2013/12/embedding-python-in-c-converting-c.html //Make some vectors containing the data static const double xarr[] = {1,2,3,4,5,6,7,8,9,10,11,12,13,14}; std::vector<double> xvec (xarr, xarr + sizeof(xarr) / sizeo…

Mini-project description - Rock-paper-scissors-lizard-Spock Rock-paper-scissors is a hand game that is played by two people. The players count to three in unison and simultaneously "throw" one of three hand signals that correspond to rock, paper…