How to Use Python to get your favorite top n movie information in Douban, pythontop

How to Use Python to get your favorite top n movie information in Douban, pythontop

1. What is Python?

Python is a simple, easy to learn, elegant, robust, powerful, and object-oriented interpreted scripting language. with over 20 years of development history, mature and stable. rich and powerful class libraries support daily applications.

In 1989, romsam wanted to develop a set of tools to complete daily system management tasks and access the distributed operating system Amoeba system calling. So he began to create a universal development Language Python from the end of 1989.

Ii. Why Python?

All languages have application scenarios, only suitable and inappropriate

Language is a tool, and ideas (Ideas & algorithms) are the foundation

Iii. Advantages of Python

Easy to learn

Simple, easy to learn, free, open-source, portable, scalable, embedded, and object-oriented

Well-functioning development that can meet the vast majority of our work needs

Common Language, which can be used in almost any field or scenario and can be used across platforms. Currently, the Python runtime environment is installed by default in all Linux systems.

Whether there is a complete ecosystem in the community

Pypi, github, StackOverFlow, oschina

Success stories

Domestic: Douban, zhihu, Shanda, BAT, Sina, Netease...

Foreign Countries: Google, YouTube, Facebook, RedHat...

Iv. Use Cases of Python

System Management Tasks

Web Programming

Graphics Processing and multimedia applications

Text Processing (crawler)

Mathematical processing (data analysis and machine learning)

Network Programming

Game Development

Hacker (POC script, Trojan)

Automated Testing

O & M Development

Cloud computing

5. What is crawler?

Automatically obtain information on the internet according to certain rules (with the rapid development of the network, the Internet has become a carrier of a large amount of information, and how to effectively extract and use this information has become a huge challenge)

Application

Search engines (Google, Baidu, Bing, and other search engines to help people Retrieve Information)

Stock software (crawling stock data to help people analyze decisions and conduct financial transactions)

Web scanning (all Web pages of the website need to be scanned for vulnerabilities)

Get the latest articles from a website

Crawl Weather Forecast

Crawl beautiful mm photos

Likes a space friend

......

Vi. Practical projects

1. Project Objectives

Objective: To obtain information about your favorite top n movies in Douban

2,Basic knowledge

HTTP protocol

The client initiates a request. After receiving the request, the server returns formatted data. The client receives, parses, and processes the data.

HTML (Hypertext Markup Language)

Python

Basic syntax

Module

>>> Common system modules

>>> Third-party module Installation and Use

>>> Pip install requests

>>> Pip install pyquery

3. manual search

4. Program startup

5. Get the movie list

6. Get movie details

7. Write csv files

How to Learn Python

Multi-copy, multi-write, think much, ask more, read more, listen more, say more

Learning programming is used to solve practical problems and program repetitive work in work or study.

Google and Du Niang

Join the Python learning and Communication Group (read more, share more, and communicate more)

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