Programmer Group

1, Show wait (conditional wait) common problem: The location is clearly right. Why can't the running code find the location. The location is clearly right. If the location is found, why is the text information empty? Analysis reason: frame not processed The page rendering speed is slower than the code of automatic test, and the page is locat ...

variable In the file hello_world.py,.Py is the suffix of the python file and is therefore parsed using the Python interpreter. $ cat hello_world.py print("Hello Python world!") Now change to variable form, message is variable, and each variable is associated with a value: message = "Hello Python worl ...

1. Design model We used to operate the database by writing sql statements. Can we operate the database without writing sql statements? Of course, it's time to use the ORM framework. 1.1 ORM framework O is object, which means class object, R is relation, translated into Chinese is relation, which means data table in relational database, M is map ...

Preface Since the last two blogs Python genetic and evolutionary algorithm toolbox and its application in constrained single objective function value optimization And genetic algorithm The shortest path of directed graph After that, I learned the official documents of the toolbox and the research of ...

New year's Day is coming. Let's not talk about it. I'd like to give you a new year's Eve Recently, the IOS students next to me asked for leave to stay at home. Hey, hey, I was left alone in the corner shivering. Although the air conditioner of the company was turned on to 28 ℃, it still couldn't melt my ...

synchronization concept Synchronization is to execute our code step by step Advanced But in some cases, we have some time-consuming operations, such as getting some resources from other places, requesting data from other websites, accessing databases, uploading files, etc., so there are advantages ...

Application Security cookie Ordinary cookie What do we usually have in our user list When you are shopping, join the shopping cart and let you log in. After you log in, how does he know you are logged in The value of token is random and exists in the cookie Set up Prototype: how to set cookie s ...

abstract Beautiful Soup is a Python library that can extract data from HTML or XML format files by parsing HTML or XML data into Python objects for easy processing through Python code. Document environment Test environment for code in this document Instructions for using Beautifu Soup The basic function of Beautiful Soup is to find and e ...

Why do we need package management Python has pip, Nodejs has npm.Is there a package management tool in other languages, so go needs it?Of course not, let's look at the following code: import ( "github.com/TomatoMr/something" ) This is how go references packages, which is obviously a third-party package, so how exactly is it found on our m ...

brief introduction The ONNX Runtime is an engine for ONNX(Open Neural Network Exchange) model reasoning. Microsoft, together with Facebook and other companies, launched an in-depth learning and machine learning model format standard - ONNX in 2017. Along the way, it provides an engine dedicated to ONN ...