web-scrapers | various web scrapers as examples | Scraper library
kandi X-RAY | web-scrapers Summary
kandi X-RAY | web-scrapers Summary
various web scrapers as examples
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Top functions reviewed by kandi - BETA
- Returns a dictionnary containing the levels
- Get skills
- Get the S terms
- Parse parameters
- Get rows for a given case
- Gets the list of associations
- Process a link string
- Process a link
- Removes illegal characters
- Load dump from pickle file
- Login to pacer
- Given a list of books and a list of books
- Get the list of revisions
- Get all org dicts
- Lookup pagina
- Find the text in the thread
- Return the width and height of the image
- Extracts all the pages from the diabetes
- Get a JSON response from the API
web-scrapers Key Features
web-scrapers Examples and Code Snippets
Community Discussions
Trending Discussions on web-scrapers
QUESTION
I have multiple processes (web-scrapers) running in the background (one scraper for each website). The processes are python scripts that were spawned/forked a few weeks ago. I would like to control (they listen on sockets to enable IPC) them from one central place (kinda like a dispatcher/manager python script), while the processes (scrapers) remain individual unrelated processes.
I thought about using the PID to reference each process, but that would require storing the PID whenever I (re)launch one of the scrapers because there is no semantic relation between a number and my use case. I just want to supply some text-tag along with the process when I launch it, so that I can reference it later on.
...ANSWER
Answered 2021-Jan-21 at 15:28pgrep -f
searches all processes by their name and calling pattern (including arguments).
E.g. if you spawned a process as python myscraper --scrapernametag=uniqueid01
then you can run:
TAG=uniqueid01; pgrep -f "scrapernametag=$TAG"
to discover the PID of a process later down the line.
QUESTION
I am working on a web scraper, but I have stumbled across this weird behavior when using a string placeholder in a list comprehension (here is a snippet of my code from Pycharm):
...ANSWER
Answered 2017-Nov-29 at 21:13To answer my own question, if you need to generate your own list of starting URLs for scrapy.Spider
classes, you should overwrite scrapy.Spider.start_requests(self)
. In my case, this would look like:
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install web-scrapers
You can use web-scrapers 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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