scrapy-inline-requests | A decorator to write coroutine-like spider callbacks | Crawler library
kandi X-RAY | scrapy-inline-requests Summary
kandi X-RAY | scrapy-inline-requests Summary
A decorator to write coroutine-like spider callbacks.
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Top functions reviewed by kandi - BETA
- Handle a failure
- Unwind a generator
- Wrap the request
- Clean the request
- Scrape the user s profile
- Load user data
- Iterate links
- Decorator for inline requests
- Get the arguments of a method
- Read rst file
- Read contents of a file
- Handle a successful response
- Return a list of packages in a given path
- Reads the content of a file
- Read requirements file
scrapy-inline-requests Key Features
scrapy-inline-requests Examples and Code Snippets
Community Discussions
Trending Discussions on scrapy-inline-requests
QUESTION
I've been trying to use async to get rid of additional callback within parse method. I know there is a library inline_requests which can do it.
However, I wish to stick with async. What I can't userstand is how I can issue a post requests within parse method.
When I issue a post request using inline_requests, I get success:
...ANSWER
Answered 2021-Dec-31 at 12:20import scrapy
class HkexNewsSpider(scrapy.Spider):
name = "hkexnews"
start_urls = ['http://www.hkexnews.hk/sdw/search/searchsdw.aspx']
async def parse(self, response):
payload = {item.css('::attr(name)').get(default=''): item.css('::attr(value)').get(default='') for item in response.css("input[name]")}
payload['__EVENTTARGET'] = 'btnSearch'
payload['txtStockCode'] = '00001'
payload['txtParticipantID'] = 'A00001'
request = scrapy.FormRequest(self.start_urls[0], formdata=payload, dont_filter=True)
resp = await self.crawler.engine.download(request, self)
total_value = resp.css(".ccass-search-total > .shareholding > .value::text").get()
yield {"Total Value": total_value}
QUESTION
I want to obtain the text of link.url in this case. So links contain a set of urls and in each iteration, attach the text inside from link.url. For this, scrapy needs to visit link.url. I do that by sending a request and then the callback function is supposed to extract the text. But in the output file, I see that the text field contains links.url and not the text from links.url.
Briefly, I want something like fetch function from scrapy shell which returns everything inside response object but in python. This is what I'm trying to do inside the code below:
ANSWER
Answered 2021-Mar-30 at 05:49This is a typical use case of using meta on request. What you want to do is below
- Generate the item without the text
- Pass the item as a meta for request url for which text needs to be collected
- Yield the item once the text is available
Not tested but something on below lines should help you
QUESTION
I am quite new to Scrapy and have this requirement where I need the response of the Scrapy Request back to the function it is getting called from. Currently I found only 1 solution for this by using scrapy-inline-requests library
Is there any native way for this in Scrapy?
For Example
...ANSWER
Answered 2020-Jun-06 at 09:03Since Scrapy was built on top of the Twisted async library, don't think it's possible. The callback method gets invoked with the HTTP response without blocking the calling thread.
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install scrapy-inline-requests
You can use scrapy-inline-requests like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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