anaconda python 2 7

granule 1 ',' A ',encoding=' Utf-8 ')F.write (' La la la la cheer')Iv. other modes of file handling1. File modificationsrc_f=Open' xxx ',' R ',encoding=' GBK ')dst_f=Open' xxx ',' W ',encoding=' GBK ')with open ( ' xxx ' , ' R ' , encoding= ' GBK ') as src_f open ( ' xxx_new ' , ' W ' , encoding= ' GBK ') as dst_f: Data=src_f.read () Dst_f.write (data) F=open ( ' a.txt ') print (f.encoding) #查看文件编码 2.tell3.seek 0124.flush#讲文件内容从内存刷到硬盘#文件如

be inherited.2. Using @property When binding properties, if we directly expose the properties, although it is very simple to write, but there is no way to check the parameters, resulting in the result can be changed casually:s == 9999This is obviously illogical. To limit the scope of the score, you can set the score by one method, and set_score() then get the score by one, get_score() so that in the set_score() method, you can check the paramet

Model class Design User UserInfo Uname Upwd ... Isdelete Product Category TypeInfo Ttitle Isdelete Product Goodsinfo Gtitle Gtype Gprice Gdesc Isdelete Shopping Cart Cartinfo User Goods Count Order OrderInfo User Ototal State Order Details Orderdetailinfo Order Goods Count Price

Time module is primarily processed in Python1.time.localtime ()TM YearTM Mon Month 1-12TM Mday Date 1-31TM Hour Hours 0-23TM min Min 0-61TM sec Sec. 0-61TM Wday 0-6 weeksTM yday number of days in the year 1-366TM Isdst is daylight saving time, default is-1>>> import time>>> time.localtime () time.struct_time (tm_year=2014, tm_mon=10, tm_mday=31, tm_hour= tm_min=10, tm_sec=45, tm_wday=4, tm_yday=304, tm_isdst=0)2.time.time ()Time.time returns the times

Locating a group of objectsLocate a group of objects--find_elements_by_ ... (), note, here is elements, plural. The returned result is a list of values that we need to use to get the elements we want. There is so much to be aware of. See a piece of code immediately understand:This is Baidu in the upper right corner of a few tags. We see that the class from "News" to "academic" is the same:# coding: utf-8from selenium import webdriverdriver = webdriver.Firefox()driver.get("http://www.baidu.com")d

Download Link: http://www.jetbrains.com/pycharm/If only to develop Python, this free version should have been enough.Today's talk is how to install Pycharm under CentOS7:Download complete, right-click Extract here can be extracted;Decompression completed, into the bin directory, right-click terminal;chmod +x pycharm.sh Let this file have permission to run;Su can enter root before running, otherwise the installation may not succeedTerminal./pycharm.sh

Python game engine development (7): drawing vector Graphs Today, we will draw a vector image.Graphics class First, createGraphicsClass is used to create vector graphics: Class Graphics (DisplayObject): def _ init _ (self): super (Graphics, self ). _ init _ () # self. _ drawingList = [] # used to store the current graphic data self. _ currentGraphics = None Since our window interface is constantly being clea

‘:"Value1",‘Key2‘:{‘K1‘:‘V1‘,‘K2‘:[‘vv1 ", ' vv2 ' "}, "key3 ": 886, "key4": [ ' armin", Modifications to dictionaries and lists in nested:A_dict ={‘Key1‘:"Value1",‘Key2‘:{‘K1‘:‘V1‘,‘K2‘:[‘Vv1‘,‘Vv2‘]},‘Key3': 886,‘Key4‘:[‘Armin‘,‘Admin ", [1,2,3],{" k41 ": " v41 ' }]} A_dict[ "key4"][3][ ' n "]= "test" #向 Keys4 in the fourth element Add a key n value to test. a_dict[ "key4print (a_dict) Nested applications:A_dict =[ {"Name" :"Armin","Pwd" :"123"}, {"Name" :"Admin","Pwd" :"123

11. Object-Oriented Programming(1) IntroductionSlightly(2) SelfSuppose you have a class called MyClass and an instance of this class MyObject .When you call the method MyObject.method(arg1, arg2) of this object,This will be automatically converted MyClass.method(MyObject, arg1, arg2) by Python-that's how it self works .(3) classSlightly(4) Methods of the objectSlightly(5) __init__ methodSlightly(6) Var

. PopitemThe Popitem method is similar to List.pop, which pops up the last element of the list. But the difference is that popitem pops up random entries because the dictionary does not have "last element" or other concepts about the order. This method works well if you want to remove and process items one after the other, because you don't have to get the list of keys first.The dictionary does not have a method equivalent to append, because the dictionary is unordered, and a method similar to a

Python basics 7 -- set, python7 -- Set Set The set in Python is an unordered, non-repeating element set. Basic functions include link testing and deduplication. The Set object also supports mathematical operations such as union, intersection, difference, and sysmmetric differencr. Set supports x in set, len (set), and for x in set. As an unordered set, set does n

. Original image2. HSV Space5. RGB Turn LabThe code is as follows:#encoding:utf-8import numpy as npimport cv2image = cv2.imread("H:\\img\\lena.jpg")cv2.imshow("Original",image)cv2.waitKey(0)#lab空间lab = cv2.cvtColor(image, cv2.COLOR_BGR2LAB)cv2.imshow("L*a*b*", lab)cv2.waitKey(0)The results are as follows1. Original image2. Lab Space Copyright NOTICE: This article for Bo Master original article, without Bo Master permission not reproduced. Opencv-python