Web-crawlers | Some old python crawlers

by vesuppi Python Version: Current License: No License

X-Ray Key Features Code Snippets Community Discussions(6)Vulnerabilities Install Support

kandi X-RAY | Web-crawlers Summary

Web-crawlers is a Python library. Web-crawlers has no bugs, it has no vulnerabilities and it has low support. However Web-crawlers build file is not available. You can download it from GitHub.

These five crawlers were written during my undergraduate study due to various ends. They targeted at the following five different sites. The code could be outdated and might not run on your machine, but the idea behind the code applies to all sorts of problems in web crawling.

Support

Quality

Security

License

Reuse

Support

Web-crawlers has a low active ecosystem.

It has 75 star(s) with 44 fork(s). There are 9 watchers for this library.

It had no major release in the last 6 months.

Web-crawlers has no issues reported. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of Web-crawlers is current.

Quality

Web-crawlers has 0 bugs and 75 code smells.

Security

Web-crawlers has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

Web-crawlers code analysis shows 0 unresolved vulnerabilities.

There are 6 security hotspots that need review.

License

Web-crawlers 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

Web-crawlers releases are not available. You will need to build from source code and install.

Web-crawlers has no build file. You will be need to create the build yourself to build the component from source.

Web-crawlers saves you 105 person hours of effort in developing the same functionality from scratch.

It has 268 lines of code, 3 functions and 6 files.

It has low code complexity. Code complexity directly impacts maintainability of the code.

Top functions reviewed by kandi - BETA

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

generate test results
Main function for songtaste .
get source page

Get all kandi verified functions for this library.

Web-crawlers Key Features

No Key Features are available at this moment for Web-crawlers.

Web-crawlers Examples and Code Snippets

No Code Snippets are available at this moment for Web-crawlers.

Community Discussions

Trending Discussions on Web-crawlers

Is there a way of rendering a different page depending on who is the client, web-crawler vs web-apps-clients?

error message "ModuleNotFoundError: No module named 'context_locals'" occurred while import tool

How to filter data with Logstash before storing parsed data in Elasticsearch

How to hide PDF file on my website from bots with reCaptcha?

Best crawler to determine built with technologies?

C# get list bots dynamic

QUESTION

Is there a way of rendering a different page depending on who is the client, web-crawler vs web-apps-clients?

Asked 2019-Mar-27 at 13:00

I'm setting up my web page to support ssr and here comes my question, can I know if the client is a web-crawler so I can do ssr?

This way I will serve my web-page as it is to clients that are not web-crawlers

I have seen that to verify google-bot-crawler you can use https://stackoverflow.com/a/3308728/8991228

But is there a general way of doing so?

...

ANSWER

Answered 2019-Mar-27 at 13:00

There is a header: User-Agent and it is usually with the help of him that you are able to recognize whether it is a browser or a bot, but...

The difficulty of falsifying this header is 0.

Therefore, additional verification methods are used, e.g. Google, as you have shown.

But... Not all bots appear as bots. For example, Google has a tendency to check if another content is being sent to the bot.

In sum: You can do it if you know that the bot accepts it (eg for Facebook link sharer)

Source https://stackoverflow.com/questions/55377471

QUESTION

error message "ModuleNotFoundError: No module named 'context_locals'" occurred while import tool

Asked 2019-Mar-13 at 03:54

When I import module tool, I get the following error message,

...

ANSWER

Answered 2019-Mar-13 at 03:54

I went ahead and installed the package to reproduce the error.

The problem arises because the package is written for Python 2, and uses implicit local imports. They were prohibited in Python 3. Read more in this question: Changes in import statement python3.

But even after you fix the relative imports problems, you get

Source https://stackoverflow.com/questions/55116445

QUESTION

How to filter data with Logstash before storing parsed data in Elasticsearch

Asked 2019-Feb-19 at 20:01

I understand that Logstash is for aggregating and processing logs. I have NGIX logs and had Logstash config setup as:

...

ANSWER

Answered 2019-Feb-19 at 17:27

In your filter you can ask for drop (https://www.elastic.co/guide/en/logstash/current/plugins-filters-drop.html). As you already got your pattern, should be pretty fast ;)

Source https://stackoverflow.com/questions/54771025

QUESTION

How to hide PDF file on my website from bots with reCaptcha?

Asked 2018-Jun-12 at 23:53

I'm currently trying to share a PDF document on my personal website.

When it's not a problem to do it I need to hide it from bots.
I tried to use google's Invisible reCAPTCHA but had some issues.

Web-crawlers can search through source code so inactive button doesn't work.
Do I need a special page to check if reCAPTCHA is done? Maybe is there an easy way to always show link but hide link HREF or form ACTION attribute (maybe with PHP help) when non-human is found?

...

ANSWER

Answered 2018-Jun-12 at 23:53

Ok, I did it with captcha-response. My main parts of code:

index.php

Source https://stackoverflow.com/questions/50825896

QUESTION

Best crawler to determine built with technologies?

Asked 2017-Apr-07 at 08:31

Builtwith.com and similar services provide (for a fee) lists of domains built with specific technologies like SalesForce or NationBuilder. There are some technologies that I am interested in that builtwith does not scan for, probably because they are too small a market presence.

If we know certain signatures of pages that reveal a technology is used for a site, what is the best way to identify as many as possible of those sites? We expect there are 1000's, and we're interested in those in the top 10M sites by traffic. (We don't think the biggest sites use this technology.)

I have a list of open source webcrawlers - http://bigdata-madesimple.com/top-50-open-source-web-crawlers-for-data-mining/ - but my use case seems different than many of the regular criteria for crawlers as we just want to save 'hits' of domains with this signature. So we don't need to be fast, but we do need to check all pages of site till a hit is found, only use responsible crawling practices, etc. What's best?

Or instead of tweaking a crawler and running it is there a way to get Google or some other search engine to find page characteristics rather than user visible content that would be a better approach?

...

ANSWER

Answered 2017-Apr-07 at 08:31

You could tweak an open source web crawler indeed. The link you posted mentioned loads of resources but once you remove the ones that are not maintained and those which are not distributed, you won't be left with very many. By definition you don't know which sites contain the signatures you're looking for, so you'd have to get a list of the top 10M sites and crawl them, which is a substantial operation, but it is definitely doable with tools like Apache Nutch or StormCrawler (not listed in the link you posted) [DISCLAIMER I am a committer on Nutch and the author of SC].

Another approach, which would be cheaper and quicker, would be to process the CommonCrawl datasets. They provide large web crawl data on a monthly basis and do the work of crawling the web for you - including being polite etc... Of course, their datasets won't have a perfect coverage but this is as good as you'd get if you were to run the crawl yourself. It is also a good way of checking your initial assumptions and the code for detecting the signatures on very large data. I usually recommend processing CC before embarking on a web-size crawl. The CC website contains details on libraries and code to process it.

What most people do, including myself when I process CC for my clients, is to implement the processing with MapReduce and run it on AWS EMR. The cost depends on the complexity of the processing of course, but the hardware budget is usually in the hundreds of $.

Hope this helps

EDIT: DZone have since republished one of my blog posts on using CommonCrawl.

Source https://stackoverflow.com/questions/43058874

QUESTION

C# get list bots dynamic

Asked 2017-Jan-09 at 08:14

How to get bot list dynamic or I need services get bot list for check view without bot crawler.

Like that : Detecting honest web crawlers, however I want to get dynamic bot list (latest bots).

Thanks for support, TuanTH

...

ANSWER

Answered 2017-Jan-09 at 05:53

You can update your crawler list from an XML source like http://www.user-agents.org/

Source https://stackoverflow.com/questions/41540824

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

Vulnerabilities

No vulnerabilities reported

Install Web-crawlers

You can download it from GitHub.
You can use Web-crawlers 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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