Python

List: Lists, data types can be differentDefinition: (example) classmates = [' Michael ', ' Bob ', ' Tracy ']Access to an element: (example) classmates[0] means access to the first element (example) classmates[-1] means access to the last elementGet

In the example, for the specified string:Faa5fbb5fcc5fdd5010200000028000001900000000a002d00000000017d7840000003e800005fa55fb55fc55fd5Three methods were used to convert them to uppercase letters and each 2 characters were separated with a space to

Use case management problem solved, the next thing to consider is to report my problem, here to generate test reports mainly used to htmltestrunner.py this module, the following is a brief introduction to how to use:First, download Htmltestrunner

First, install the XLRD module:1. Open the Terminal input command under Mac:Pip Install Xlrd2. Verify the installation is successful: Enter python into the Python environment at the Mac Terminal Then enter import xlrd No error

#Coding=utf-8ImportOSImportMultiprocessing fromTimeImportCTime, Sleep fromSeleniumImportWebdriverclassTestClass (object):defWorker (self, interval, browser="Chrome", url="Http://loginurl"): Driver= eval ("webdriver.%s ()"%browser) driver.get (URL)

With list generation, we can create a list directly. However, with memory limitations, the list capacity is certainly limited. Also, creating a list of 1 million elements takes up a lot of storage space, and if we just need to access the first few

Introduced?? This blog will introduce a Python crawler to crawl the national flag, and the main goal is to show how to use the Post method in Python's requests module to crawl Web content.?? In order to know the HTTP request header and the request

1 concept of co-process 1.1 co-processCo-process, also known as micro-threading, fiber. English name Coroutine. One sentence explains what a thread is: The process is a lightweight thread that is user-state . (In fact, it does not indicate white ~)I

1 #-*-encoding:utf-8-*-2 3 classDate (object):4 def __init__(self, year, month, day):5Self.year = Year6Self.month =Month7Self.day = Day8 9 #instance MethodTen defTomorrow (self): OneSelf.day +=1 A - #static method (disadvantage:

Loading a ndarray array from a file Loads the Ndarray array from the text file Np.loadtxt>>># textfile是文本文件 .npyloads the Ndarray array from or to the .npz file Np.loadReturns a single Ndarray array if it is a file that ends in.

Python Basics (Classes and objects, packages)Classes and objectsThe object is seen and touched.Class is a templateObjects require classes to be createdThe composition of a class (three parts)Name of class: class nameClass Properties: A set of

1.os Module1.1 OS.GETCWD ()　　# get current directory a=os.getcwd ()print(a)1.2 Os.chdir ()　　　　# Change Script current directory os.chdir ('path')1.3 Os.makedirs ()　　Os.makedirs ('dirname1/diename2')1.4 Os.removedirs ()Delete the folder, you can

Installing BeautifulSoup and requestsOpen the cmd window of Windows Input command PIP install requests perform the installation, wait for his installation to complete.BeautifulSoup Library is the same wayThe compiler I'm using is sublime text 3, and

Heap IntroductionBinary heap can be seen as a near-complete binary tree. The parent that can be divided into max-heap and min-heap,max-heap is larger than children, min-heap opposite.There are two basic features in the heap that are usually composed

In Python, the properties of data and the methods of handling data are collectively referred to as attributes. In fact, the method is just a callable property. In addition to these two, we can also create attributes, without changing the class

Scenario IntroductionOne day, when you're working overtime, the boss gives you the task of starting all the functions in this code to output a ' hello ' to the last output of the current time, and then output an "end", the code contains a lot of

2018 June , 21st Python Introductory Course learning experience Thanks to Alex's carefully prepared course content and beautiful PPT, summarize The main contents of the first lesson are :1. What do you learn from Python ? 2. What do you want to do

First, Hello World program1, create a file under Linux called hello.py, and enterPrint ("Hello world!")Then execute the command: Python hello.py, outputlocalhost:~ jieli$ vim hello.pylocalhost:~ jieli$ python hello.pyhello world!2. Executed by

File structure:Db.ini configuration file for placing DB informationfile [Gloryroad] is section informationThe dbname below is the option informationUiobjectmap.ini placing configuration information for accessing the WebConfigure the XPath element

Action Date Elementthe first way to enter a date directly into the input boxDateinputbox = self.driver.find_element_by_id ("DatePicker")Dateinputbox.send_keys ("11/24/2016")#encoding =utf-8From selenium import WebdriverImport UnitTest, Time,