aioscpy 0.3.8

An asyncio + aiolibs crawler imitate scrapy framework

Aioscpy

An asyncio + aiolibs crawler imitate scrapy framework

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Overview

Aioscpy framework is base on opensource project Scrapy & scrapy_redis.

Aioscpy is a fast high-level web crawling and web scraping framework, used to crawl websites and extract structured data from their pages.

Dynamic variable injection is implemented and asynchronous coroutine feature support.

Distributed crawling/scraping.

Requirements

• Python 3.8+
• Works on Linux, Windows, macOS, BSD

Install

The quick way:

pip install aioscpy

Usage

create project spider:

aioscpy startproject project_quotes

cd project_quotes
aioscpy genspider quotes 

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)

create single script spider:

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 = SingleQuotesSpider()
    quotes.start()

run the spider:

aioscpy crawl quotes
aioscpy runspider quotes.py

start.py:

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

"""start spider method one:
from cegex.baidu import BaiduSpider
from cegex.httpbin import HttpBinSpider

process = CrawlerProcess()
process.crawl(HttpBinSpider)
process.crawl(BaiduSpider)
process.start()
"""


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


def load_name_to_execute():
    process = call_grace_instance("crawler_process", get_project_settings())
    process.crawl('baidu', path="./cegex")
    process.start()


if __name__ == '__main__':
    load_file_to_execute()

more commands:

aioscpy -h

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