Reptile examples and knowledge points (Scrapy knowledge points)

New knowledge:
新建一个scrapy项目：scrapy startproject xxx(项目名称）
Run a scrap y project: scrapy crawl xxx（项目名称）

Project Document Description:

File Description:
? The configuration information for the SCRAPY.CFG project, which provides a basic configuration information for the Scrapy command-line tool. (Real crawler-related configuration information in the settings.py file)
? items.py set up a data store template for structured data, such as the Django model
? Pipelines data processing behavior, such as: general structured persistence
? settings.py configuration files, such as: number of recursive layers, concurrency, delayed download, etc.
Spiders crawler directories, such as: Create files, write crawler rules

The code is as follows:

Reptile examples and knowledge points (Scrapy knowledge points)