Python

ObjectiveSometimes the element has been found, the operation is not error, click on the page did not respond. This problem encountered, is more headache, because there is no error, but the click event is invalid.This article uses 2 kinds of methods

Describe:A simple trainee into a verification code or password of small script, the verification code is widely used in the web of random authentication module, can also be slightlyThe effect of randomly generated passwords. Take a look at the

ObjectiveThe method of getting the page title can be obtained directly with Driver.title, and then the obtained result can be used as an assertion.This article introduces another way to determine whether the page title and expected results of one,

If statementIf condition:Operation performed with Condition True (true)ElseAction performed on condition False (false)Print ('------------How much money do you need me to have? ------------‘)temp = input ("Take a look at my money Now:")guess = Int

Anonymous grouping of URL configuration systems A well-known grouping of URL configuration systems Distribution app for the URL configuration system URL reverse parsing of URL configuration system Request object of view function

1.commands ModuleA module for supporting the shell in a Linux system environment1) getoutput ()Return value only returns the result (string type), no way to determine whether the execution of the result is normalExampleImport commandscmd =

Logging Module Learning1. Five levels of loggingDebug: Diagnostic informationInfo: Make sure everything works as expectedWarning: Warning information, such as high CPU load, low hard disk spaceError: More serious things, but the system can still

The concatenation method of string(a) direct use of "+" sign, low efficiency (will open up another space in memory)name = ' Jacky ' + ' Zhao '(ii) string formattingName = '%s%s '% (' Jacky ', ' Zhao ')(iii) Join methodListName = [' Jacky ', ' Zhao ']

What is a module?In the daily development work, we have to write a lot of Python code, if all written in a file, it will cause the code is particularly difficult to maintain, in order to expand the maintainability of the code, we write the letter in

1. Pip Install virtualenvInstalling Virtualenv Mirroring2. Installing DjangoPip Install-i https://pypi.douban.com/simple Django3, Virtualenv ScrapytestNew Virtualenv4, CD to \scrapytest\scripts directory run Activity.batEnter the virtual environment

is in the CMD environment:Request LibraryPip Install request EnterPandas LibraryIn the same way, Pip install Pandas, here need to declare, this is not necessarily successful, just a little bit to see the beginning of the problem is not very clear,

Write to Excel via XLWTNeed to install and import the XLWT module1 defSet_style (name, height, bold=false):#a name parameter, a height parameter, not bold by default2style = XLWT. Xfstyle ()#Initialize Style3Font = XLWT. Font ()#Create a font for a

ObjectiveWhen there are multiple login accounts, we generally use Excel to store test data, this lesson introduced, Python read the Excel method, and save as a dictionary format.First, the Environment preparation1. First install the XLRD module,

The Python module, which is a python file that ends with a. Py, contains Python object definitions and Python statements. Modules allow you to logically organize your Python code snippets. Assigning the relevant code to a module will make your code

ObjectiveSystem pop-up window This is a very common scene, sometimes it does not play out to operate, will throw an exception. Then do not know when it will come out, so long need to determine whether the pop-up window.This article then

1:helpYou need to get information about any function, type in Python, use the Help (' content ') command to view the assistance, and press Q to exit the help.2: Formatting stringsThe format method is an important way to format data.String

Python introduces a mechanism: reference counting.Python internally uses reference counting to keep track of objects in memory, and Python internally records how many references the object has, that is, the reference count, when the object is

Dektec's Sdk:https://www.dektec.com/products/sdk/dtapi/downloads/winsdk_v2017.08.0.zipDektec Code Stream Card DTU-215 's official website Codes example: Https://www.dektec.com/products/applications/DtPlay/Downloads/DtPlay.zipInternet is not stable,

JSON is a lightweight data interchange format that is commonly used in HTTP requests and is often seen in daily operations.Conversion of 1.json types and Python datafunction conversion corresponding relational table:

Simple multi-thread demonstration and simple multi-thread demonstrationI. Preface We know that a single-core cpu can only execute one task at a time. If we are on a single-core cpu computer, we can log on to qq, listen to music, or write documents