Design Mode Software Development Original Open Close Principle and Dependency Inverted Principle

Open and Close Principle Definition The so-called open-close principle is that a software entity such as classes, modules, and functions should be open to extensions and closed to modifications.Emphasizes building a framework with abstraction to achieve expanded detail. It has the advantage of improving the reusability and maintainability of th ...

Added by jonskinny12 on Sun, 19 May 2019 00:02:12 +0300

Some Betta TV Web APIs [Some DouyuTv APIs]

  Written in the forefront Developed before TI5 last year dotaonly.com Web sites need to use APIs of various live platforms. Unlike Twitch, which is not as open as foreign websites, there are ready-made APIs available. Domestic websites are closed and not very friendly to developers. The APIs mentioned in this paper are all crawled from the F ...

Added by KendersPlace on Sat, 18 May 2019 21:08:39 +0300

Python Crawler Crawling Dynamic Page Ideas + Crawling Jingdong Example

brief introduction Sometimes, when we naively download HTML pages using urllib libraries or Scrapy, we find that the elements we want to extract are not in the HTML we download, although they seem to be readily available in browsers. This shows that the elements we want are dynamically generated through js events under some of our operations. F ...

Added by phast1 on Sat, 18 May 2019 10:14:26 +0300

Python+selenium crawls job information recruited by Zhilian

The whole crawler is based on selenium and Python, running the packages needed  1 mysql,matplotlib,selenium  Need to install selenium Firefox browser driver, Baidu search. The whole crawler is modular. Functions and classes with different functions are placed in different files. Finally, constants that need to be configured are placed in consta ...

Added by ludwig on Sat, 18 May 2019 09:49:29 +0300

python pymssql usage - Guide to the use of pymssql modules

pymssql module usage guide Preface Using pymssql module Basic usage process Create connection User Authentication Logon Windows Identity Authentication Logon Several other common options Interactive operation Submit sql commands Calling stored procedures Submit revision Get results Notes for Cursor Objects Close links F ...

Added by sandstorm140 on Sat, 18 May 2019 09:34:38 +0300

Python File Reading and Writing

python file read and write Reading and writing files is the most common IO operation. Python has built-in functions for reading and writing files, which are compatible with C. Before we read and write files, we must understand that the function of reading and writing files on disk is provided by the operating system. Modern operating syste ...

Added by kf on Sat, 18 May 2019 06:19:51 +0300

Multitask-protocol

I. Concepts of the protocol Protocol, also known as micro-threading, fiber.The English name is Coroutine. Collaboration is another way of multitasking in python, but takes up less execution units (understood as required resources) than threads. The general understanding is that a function in a thread can store informatio ...

Added by Xanthis on Sat, 18 May 2019 04:28:50 +0300

Python Interesting | Emotional Analysis of Chinese Texts

Preface Previously, I have talked about the path of python machine learning. This time, Luo Luopan takes you to complete a machine learning project of Chinese text sentiment analysis. Today's process is as follows: Data Situation and Processing Data situation The data here are for the comments of the public (provided ...

Added by patrickrock on Sat, 18 May 2019 01:57:03 +0300

Overview of Object-Oriented Programming Day 24

Three Questions in Life What is an object The real thing with certain characteristics and behaviors is the object, everything is the object. What is a class A combination of a series of objects with the same characteristics and behavior is called a class.In programming, only classes can have objects. 1. What is Object OrientedObject- ...

Added by salasilm on Fri, 17 May 2019 23:59:20 +0300

Python built-in type (5) -- iterator type

Iterator refers to an object that can be called by the built-in function next and continuously returns the next value until the StopIteration error is finally thrown to indicate that it is impossible to continue returning the next value. In fact, the above statement is just the definition of chivalrous iterator. In python, the iterator also n ...

Added by srividya on Fri, 17 May 2019 17:40:07 +0300