aioscpy - 基于asyncio及aio全家桶, 使用scrapy框架流程及标准的一个异步爬虫框架

aioscpy.png

Aioscpy

基于asyncio及aio全家桶, 使用scrapy框架流程及标准的一个异步爬虫框架

概述

Aioscpy框架基于开源项目Scrapy & scrapy_redis。

Aioscpy是一个快速的高级web爬行和web抓取框架，用于抓取网站并从其页面提取结构化数据。

实现了动态变量注入和异步协程功能。

分布式爬行和抓取。

需求

• Python 3.7+
• Works on Linux, Windows, macOS, BSD

用法

创建项目爬虫:

aioscpy startproject project_quotes

cd project_quotes
aioscpy genspider quotes 

tree.png

quotes.py:

from aioscpy.spider import Spider


class QuotesSpider(Spider):
    name = 'quotes'
    custom_settings = {
        "SPIDER_IDLE": False
    }
    start_urls = [
        'https://quotes.toscrape.com/tag/humor/',
    ]

    async def parse(self, response):
        for quote in response.css('div.quote'):
            yield {
                'author': quote.xpath('span/small/text()').get(),
                'text': quote.css('span.text::text').get(),
            }

        next_page = response.css('li.next a::attr("href")').get()
        if next_page is not None:
            yield response.follow(next_page, self.parse)

创建单个爬虫脚本:

aioscpy onespider single_quotes

single_quotes.py:

from aioscpy.spider import Spider
from anti_header import Header
from pprint import pprint, pformat


class SingleQuotesSpider(Spider):
    name = 'single_quotes'
    custom_settings = {
        "SPIDER_IDLE": False
    }
    start_urls = [
        'https://quotes.toscrape.com/',
    ]

    async def process_request(self, request):
        request.headers = Header(url=request.url, platform='windows', connection=True).random
        return request

    async def process_response(self, request, response):
        if response.status in [404, 503]:
            return request
        return response
    
    async def process_exception(self, request, exc):
        raise exc

    async def parse(self, response):
        for quote in response.css('div.quote'):
            yield {
                'author': quote.xpath('span/small/text()').get(),
                'text': quote.css('span.text::text').get(),
            }

        next_page = response.css('li.next a::attr("href")').get()
        if next_page is not None:
            yield response.follow(next_page, callback=self.parse)

    async def process_item(self, item):
        self.logger.info("{item}", **{'item': pformat(item)})


if __name__ == '__main__':
    quotes = QuotesSpider()
    quotes.start()

运行爬虫:

aioscpy crawl quotes
aioscpy runspider quotes.py

run.png

start.py:

from aioscpy import call_grace_instance
from aioscpy.utils.tools import get_project_settings


def load_file_to_execute():
    process = call_grace_instance("crawler_process", get_project_settings())
    process.load_spider(path='./spiders')
    process.start()


def load_name_to_execute():
    process = call_grace_instance("crawler_process", get_project_settings())
    process.crawl('[spider_name]')
    process.start()

更多命令:

aioscpy -h

github地址: aioscpy 协程爬虫框架地址