By default, Python source files are encoded in UTF-8. In this way, the characters of most languages in the world can be used in string literal, variable, or function name and comment at same time, although the standard library uses only regular ASCII characters for variable or function names, any portable code should follow this …
The Python Operator module allows it to support functional programming. Suppose we need a function to calculate factorial, the general approach is to use recursion. If you use functional programming, there are two ways, one is to use lambda, the other is to use the arithmetic function of the Python Operator module.
This example will show you how to use jQuery to implement an image browser plugin. It shows image thumbnails in a line or grid, when you click each image, it will popup an overlay layer to display the larger image. It also shows the previous and next arrows for you to navigate different images.
In Python, you can use the os.remove method to remove files and folders, but sometimes it may resulting in some errors, this is because you do not master how to use the os.remove method correctly. This article will introduce how to use the python os.remove method correctly to avoid errors.
Web form is the basic component of a web application. It is a part of an HTML web page that is responsible for data collection. A web form consists of three parts: a form label, a form field, and a form button. Forms allow users to enter data and submit the user-entered data to web …
In the process of crawling web pages with a Python crawler, the first step is to crawl the URL. If there are many URLs on the web page, how to crawl all these URLs? This article describes two methods for a Python crawler to crawls all URLs on a Web page.
Python crawler can crawl not only static web pages but also dynamic web pages. However, the new version of selenium doesn’t support PhantomJS and can’t crawl dynamic web pages. Therefore, we should abandon PhantomJS and use headless ChromeDriver directly. This article will tell you how to install ChromeDriver.
Session is a data structure saved on the server-side, which is used to track the status of users. This data can be saved in clusters, databases, and files. Cookie is a mechanism for clients to save user data, and it is also a way to implement Session. This article introduces how to manage Session and …
This example will show you how to implement the Html tab drop-down animation effect using jQuery. When you move the mouse over the tab, it will display a drop-down menu area. When you move the mouse out of the drop-down area, the drop-down area will disappear.
Elevatezoom is a jQuery image zoom plug-in, which supports a variety of zoom methods, powerful and simple. There are three kinds of zooming effect, the picture is clear and the effect is practical. This article will tell you how to use it.