patul
A tiny spider based on asyncio and requests.
install
pip install patulusage
Just like scrapy:
import patul
class MySpider(patul.Spider):
start_urls = ['https://cn.bing.com/']
async def parse(self, response):
print(response.xpath('//a/@href').get())
yield patul.Request('https://github.com/financialfly/async-request', callback=self.parse_github)
def parse_github(self, response):
yield {'hello': 'github'}
async def process_result(self, result):
# Process result at here.
print(result)
if __name__ == '__main__':
# Run spider
patul.crawl(MySpider)For more detailed control (like: handle cookies, download delay, concurrent requests, max retries, logs settings etc.): (refer to the constructor of the Crawler class):
import patul
class MySpider(patul.Spider):
...
if __name__ == '__main__':
patul.crawl(
MySpider,
handle_cookies=True,
download_delay=0,
concurrent_requests=10,
max_retries=3,
log_settings={'fp': 'spider.log'}
)test
Use fetch function to get a response immediately:
from patul import fetch
def parse():
response = fetch('https://www.bing.com')
print(response)
parse()the output will like this:
<Response 200 https://cn.bing.com/>
The fetch function also could be use like this:
import patul
def parse(response):
print(response)
yield patul.Request(response.url, callback=parse_next)
def parse_next(response):
print(response.status_code)
yield {'hello': 'world'}
patul.fetch('http://www.baidu.com', callback=parse)then run the script, you will see the result:
<Response 200 http://www.baidu.com/>
200
