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About CrawlerDetect

This is a Python wrapper for CrawlerDetect a web crawler detection library. It helps identify bots, crawlers, and spiders using the user agent and other HTTP headers. Currently, it can detect over 3,678 bots, spiders, and crawlers.

How to install

$ pip install crawlerdetect

How to use

Variant 1

from crawlerdetect import CrawlerDetect
crawler_detect = CrawlerDetect()
crawler_detect.isCrawler('Mozilla/5.0 (compatible; Sosospider/2.0; +http://help.soso.com/webspider.htm)')
# true if crawler user agent detected

Variant 2

from crawlerdetect import CrawlerDetect
crawler_detect = CrawlerDetect(user_agent='Mozilla/5.0 (iPhone; CPU iPhone OS 7_1 like Mac OS X) AppleWebKit (KHTML, like Gecko) Mobile (compatible; Yahoo Ad monitoring; https://help.yahoo.com/kb/yahoo-ad-monitoring-SLN24857.html)')
crawler_detect.isCrawler()
# true if crawler user agent detected

Variant 3

from crawlerdetect import CrawlerDetect
crawler_detect = CrawlerDetect(headers={'DOCUMENT_ROOT': '/home/test/public_html', 'GATEWAY_INTERFACE': 'CGI/1.1', 'HTTP_ACCEPT': '*/*', 'HTTP_ACCEPT_ENCODING': 'gzip, deflate', 'HTTP_CACHE_CONTROL': 'no-cache', 'HTTP_CONNECTION': 'Keep-Alive', 'HTTP_FROM': 'googlebot(at)googlebot.com', 'HTTP_HOST': 'www.test.com', 'HTTP_PRAGMA': 'no-cache', 'HTTP_USER_AGENT': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/28.0.1500.71 Safari/537.36', 'PATH': '/bin:/usr/bin', 'QUERY_STRING': 'order=closingDate', 'REDIRECT_STATUS': '200', 'REMOTE_ADDR': '127.0.0.1', 'REMOTE_PORT': '3360', 'REQUEST_METHOD': 'GET', 'REQUEST_URI': '/?test=testing', 'SCRIPT_FILENAME': '/home/test/public_html/index.php', 'SCRIPT_NAME': '/index.php', 'SERVER_ADDR': '127.0.0.1', 'SERVER_ADMIN': 'webmaster@test.com', 'SERVER_NAME': 'www.test.com', 'SERVER_PORT': '80', 'SERVER_PROTOCOL': 'HTTP/1.1', 'SERVER_SIGNATURE': '', 'SERVER_SOFTWARE': 'Apache', 'UNIQUE_ID': 'Vx6MENRxerBUSDEQgFLAAAAAS', 'PHP_SELF': '/index.php', 'REQUEST_TIME_FLOAT': 1461619728.0705, 'REQUEST_TIME': 1461619728})
crawler_detect.isCrawler()
# true if crawler user agent detected

Output the name of the bot that matched (if any)

from crawlerdetect import CrawlerDetect
crawler_detect = CrawlerDetect()
crawler_detect.isCrawler('Mozilla/5.0 (compatible; Sosospider/2.0; +http://help.soso.com/webspider.htm)')
# true if crawler user agent detected
crawler_detect.getMatches()
# Sosospider

Get version of the library

import crawlerdetect
crawlerdetect.__version__

Contributing

The patterns and testcases are synced from the PHP repo. If you find a bot/spider/crawler user agent that crawlerdetect fails to detect, please submit a pull request with the regex pattern and a testcase to the upstream PHP repo.

Failing that, just create an issue with the user agent you have found, and we'll take it from there :)

Development

Setup

$ poetry install

Running tests

$ poetry run pytest

Update crawlers from upstream PHP repo

$ ./update_data.sh

Bump version

$ poetry run bump-my-version bump [patch|minor|major]