spider.py | [ Reference Only ] An asynchronous , multiprocessed , | Crawler library

by joshkunz Python Version: Current License: No License

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kandi X-RAY | spider.py Summary

spider.py is a Python library typically used in Automation, Crawler applications. spider.py has no bugs, it has no vulnerabilities and it has low support. However spider.py build file is not available. You can download it from GitHub.

WARNING This repository is no longer maintained and was never destined for any kind of real-life usage. This was mainly written for me to learn more about parallelism and multiplexed-IO, the code is meh and it likely no longer works WARNING.

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spider.py has a low active ecosystem.

It has 10 star(s) with 3 fork(s). There are 4 watchers for this library.

It had no major release in the last 6 months.

spider.py has no issues reported. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of spider.py is current.

Quality

spider.py has no bugs reported.

Security

spider.py has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

License

spider.py does not have a standard license declared.

Check the repository for any license declaration and review the terms closely.

Without a license, all rights are reserved, and you cannot use the library in your applications.

Reuse

spider.py releases are not available. You will need to build from source code and install.

spider.py has no build file. You will be need to create the build yourself to build the component from source.

Installation instructions are not available. Examples and code snippets are available.

Top functions reviewed by kandi - BETA

kandi has reviewed spider.py and discovered the below as its top functions. This is intended to give you an instant insight into spider.py implemented functionality, and help decide if they suit your requirements.

Initialize extractors .
Process a response .
Start the server .
Check robots . txt .
Iterate over URLs .
Queue a given URL .
Adds robots file to Redis .
Log a response .
Fills the client .
Add links to the page .

Get all kandi verified functions for this library.

spider.py Key Features

No Key Features are available at this moment for spider.py.

spider.py Examples and Code Snippets

No Code Snippets are available at this moment for spider.py.

Community Discussions

Trending Discussions on spider.py

Scrapy spider error processing (scrapy.core.scraper)

How to run multiple spiders through individual pipelines?

Traversing Links using Scrapy

Closing main scraping pipeline but keeping image download till it finishes in scrapy

ERROR: Spider error processing

Python - Is it possible for scrapy to go into each product pages and scrape the data?

Run scrapy as normal python files

Python - How do I format scrapy data in a csv file?

Python - I tried scraping items with scrapy however, the image links are not scraping

Scrape links according to their length

QUESTION

Scrapy spider error processing (scrapy.core.scraper)

Asked 2021-Jan-28 at 19:52

after reading several hours of solutions I still could not find an answer to my problem. I am trying to scrape a supermarket web page, I think the error is in the parse function. Please if someone can help me.

...

ANSWER

Answered 2021-Jan-12 at 21:32

In order to access all_link_categories defined in you spider definition inside parse method
you need to use self.all_link_categories instead of all_link_categories

Source https://stackoverflow.com/questions/65692305

QUESTION

How to run multiple spiders through individual pipelines?

Asked 2021-Jan-15 at 08:21

Total noob just getting started with scrapy.

In my directory structure I have like this...

...

ANSWER

Answered 2021-Jan-15 at 08:21

You can implement this using custom_settings spider attribute to set settings individually per spider

Source https://stackoverflow.com/questions/65727683

QUESTION

Traversing Links using Scrapy

Asked 2020-Dec-14 at 19:36

I'm having a strange issue regarding Scrapy. I followed the tutorial for traversing links but for some reason nothing is happening.

...

ANSWER

Answered 2020-Dec-14 at 01:53

response.follow() can't work with a list. You need to provide a single string argument:

Source https://stackoverflow.com/questions/65280242

QUESTION

Closing main scraping pipeline but keeping image download till it finishes in scrapy

Asked 2020-Dec-09 at 07:42

Any idea on how to give top priority to the image downloading pipeline in scrapy, or stopping the crawling pipeline without killing the rest?

My goal

I'm coding a crawler using scrapy's spiders. My goal is to crawl through pages and once a condition is met (the scraped update date is older than a parameter), closing the crawling process. But I don't want the image download pipeline to be closed before finishing it's job.

So far achieved things are:

All data except images is stored correctly and the spider closes gracefully.
Images get downloaded (so the pipeline works) but not all of them.

Problem: Some pages don't get their images downloaded. The "images_urls" fields are filled but "images" field is empty. I suspect this is because the main data scraping pipeline "goes first" and when it's closed it kills the image pipeline.

Simplified implementation

I'm summerizing the code in this lines so you can check some important parts.

mySpider_spider.py --> raise CloseSpider("Date has been reached") Closing the scraping pipeline.

Images being correctly downloaded until exception:

myspider_settings.py --> ITEM_PIPELINES = {'scrapy.pipelines.images.ImagesPipeline': 1}
main.py --> process.setting["IMAGES_STORE"] = pathFromArguments so I can parameterize the output.
items --> image_urls = scrapy.Field() and images = scrapy.Field() inside mySpider class.
mySpider_spider.py --> #Stores url in image_urls and yields correctly
pipelines.py

...

ANSWER

Answered 2020-Dec-09 at 07:42

So it seems you can add priority to pipelines easily like this:

In settings file give ImagePipeline a higher number than other pipelines. This will assure you download the images right after you scrapped that page.

Source https://stackoverflow.com/questions/65034859

QUESTION

ERROR: Spider error processing

Asked 2020-Dec-08 at 04:50

I'm extremely new to python and scrapy. I've tried running existing code and I'm getting these errors thrown. I'm running the latest version of scrapy on windows 10 and using Visual Code Studio to run my tests in, etc.

Terminal Debug

...

ANSWER

Answered 2020-Dec-08 at 04:50

You need to indent your code as per gangabass comment.

Source https://stackoverflow.com/questions/65192955

QUESTION

Python - Is it possible for scrapy to go into each product pages and scrape the data?

Asked 2020-Nov-11 at 18:49

I am new to python and web scraping and I am wondering if it is possible to scrape from product pages with scrapy.

Example: I search for monitors on amazon.com I would like scrapy to go to each product page and scrape from there instead of just scraping the data from the search results page.

I read something about xpath but I am not sure if it is possible with that and all other resources I found seems to be doing the scraping with other things like beautiful soup etc. I correctly have a scrapy project which scrapes from a search results page but I would like to improve it to scrape from the products page.

Edit:

Here's my modified spider.py based on your suggestions:

...

ANSWER

Answered 2020-Nov-10 at 00:55

This type of question is better answered with a case in point, where you provide your code and explain what you have already tried to do.

In a general way here is how you do that:

Request the search page (You mention you already did that)
Select the results you want, for that you can use either XPath selectors or CSS Selectors (Read more on selectors)
Extract the href attribute (that is the URL) of the items you want to request the product page. (This can be done with the selectors)
Yield a new request to the product page. If there is data you need to pass along you can use cb_kwargs (recommended) or meta. (Also a good explanation here)
When Scrapy get's a response for your new request it will call the parsing function (determined by the callback attribute)
In this parsing function you use selectors to scrape the data it interests you, build and yield your items.

To make it more clear, here is very broad example (it doesn't really work, it's meant to illustrate):

Source https://stackoverflow.com/questions/64761035

QUESTION

Run scrapy as normal python files

Asked 2020-Nov-11 at 09:36

After a lot of search for this topic of how to run scrapy python file as normal python files I have tried the commented lines

...

ANSWER

Answered 2020-Nov-11 at 09:36

CrawlerProcess takes a settings object as a parameter.

Since scrapy 2.1, all options for feed exports can be set using the FEEDS setting.
To get the result you want, something like this should be used:

Source https://stackoverflow.com/questions/64782960

QUESTION

Python - How do I format scrapy data in a csv file?

Asked 2020-Nov-09 at 01:27

I am new to python and web scraping and I tried storing the scrapy data to a csv file however the output is not satisfactory.

Current csv output:

...

ANSWER

Answered 2020-Nov-09 at 01:27

You can select every div element that contains a car and then iterate over those elements, yielding them one by one.

Source https://stackoverflow.com/questions/64744312

QUESTION

Python - I tried scraping items with scrapy however, the image links are not scraping

Asked 2020-Nov-09 at 00:04

I am new to python and web scraping and I tried scraping contents from this website but I am unable to get the images when I run the crawler.

Here's the spider.py:

...

ANSWER

Answered 2020-Nov-08 at 20:18

response.css('.card-image img::attr(src)').getall() # images.
response.css('.card-image img::attr(data-src)').getall() # lazy-loaded images.

Source https://stackoverflow.com/questions/64742311

QUESTION

Scrape links according to their length

Asked 2020-Nov-07 at 12:57

I want to scrape all the links of the pages with alphabetical names of this website:

That is to say links like:

...

ANSWER

Answered 2020-Nov-07 at 12:57

I believe the correct sintax of the XPath is

Source https://stackoverflow.com/questions/64727792

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install spider.py

You can download it from GitHub.
You can use spider.py 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.

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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