scrapy教程 安装使用

🧙 Questions

官方快速入门

☄️ Ideas

环境

• python
• pip

1. 安装scrapy

python -m pip install --upgrade pip
pip install scrapy

2. 初始化项目

Note: 项目名称不可以包含中划线

scrapy startproject leo_day_scrapy

# 创建新的爬虫
scrapy genspider example example.com

3. 目录结构说明

tutorial/
    scrapy.cfg            # 部署配置文件
    tutorial/             # 项目模块
        __init__.py       # 入口
        items.py          # project items definition file
        middlewares.py    # project middlewares file
        pipelines.py      # project pipelines file
        settings.py       # project settings file
        spiders/          # a directory where you'll later put your spiders
            __init__.py   # spiders中的入口文件

4. 官方demo

import scrapy


class QuotesSpider(scrapy.Spider):
    name = "quotes"

    def start_requests(self):
        urls = [
            'http://quotes.toscrape.com/page/1/',
            'http://quotes.toscrape.com/page/2/',
        ]
        for url in urls:
            yield scrapy.Request(url=url, callback=self.parse)
    def parse(self, response):
        page = response.url.split("/")[-2]
        filename = f'quotes-{page}.html'
        with open(filename, 'wb') as f:
            f.write(response.body)
        self.log(f'Saved file {filename}')

🔗 Links

• scrapy website
• scrapy docs website

pip install mysql-connector-python