fake-useragent

Up-to-date simple useragent faker with real world database

Features

• Grabs up to date useragent from useragentstring.com
• Back-up cache server if site above is down
• Store local cache file for improved performance

Installation

pip install fake-useragent

Usage

from fake_useragent import UserAgent
ua = UserAgent()

ua.ie
# Mozilla/5.0 (Windows; U; MSIE 9.0; Windows NT 9.0; en-US);
ua.msie
# Mozilla/5.0 (compatible; MSIE 10.0; Macintosh; Intel Mac OS X 10_7_3; Trident/6.0)'
ua['Internet Explorer']
# Mozilla/5.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; GTB7.4; InfoPath.2; SV1; .NET CLR 3.3.69573; WOW64; en-US)
ua.opera
# Opera/9.80 (X11; Linux i686; U; ru) Presto/2.8.131 Version/11.11
ua.chrome
# Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.2 (KHTML, like Gecko) Chrome/22.0.1216.0 Safari/537.2'
ua.google
# Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_4) AppleWebKit/537.13 (KHTML, like Gecko) Chrome/24.0.1290.1 Safari/537.13
ua['google chrome']
# Mozilla/5.0 (X11; CrOS i686 2268.111.0) AppleWebKit/536.11 (KHTML, like Gecko) Chrome/20.0.1132.57 Safari/536.11
ua.firefox
# Mozilla/5.0 (Windows NT 6.2; Win64; x64; rv:16.0.1) Gecko/20121011 Firefox/16.0.1
ua.ff
# Mozilla/5.0 (X11; Ubuntu; Linux i686; rv:15.0) Gecko/20100101 Firefox/15.0.1
ua.safari
# Mozilla/5.0 (iPad; CPU OS 6_0 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Version/6.0 Mobile/10A5355d Safari/8536.25

# and the best one, get a random browser user-agent string
ua.random

Notes

If you want to specify your own browser list, you can do that via the browsers argument (default is: ["chrome", "edge", "internet explorer", "firefox", "safari", "opera"]).

from fake_useragent import UserAgent
ua = UserAgent(browsers=['edge', 'chrome'])
ua.random

fake-useragent store collected data at your os temp dir, like /tmp

If you want to update saved database just:

from fake_useragent import UserAgent
ua = UserAgent()
ua.update()

If you don't want cache database or no writable file system:

from fake_useragent import UserAgent
ua = UserAgent(cache=False)

Sometimes, useragentstring.com changes their html or is down, in such case fake-useragent uses the following hosted cache server as fallback.

If you don't want to use hosted cache server (version 0.1.5 added).

from fake_useragent import UserAgent
ua = UserAgent(use_cache_server=False)

In very rare case, if hosted cache server and sources will be unavailable fake-useragent won't be able to download data: (version 0.1.3 added)

from fake_useragent import UserAgent
ua = UserAgent()

# Traceback (most recent call last):
#   ...
# fake_useragent.errors.FakeUserAgentError

# you can catch it via

from fake_useragent import FakeUserAgentError

try:
    ua = UserAgent()
except FakeUserAgentError:
    pass

If you will try to get unknown browser: (version 0.1.3 changed)

from fake_useragent import UserAgent
ua = UserAgent()
ua.best_browser
# Traceback (most recent call last):
#   ...
# fake_useragent.errors.FakeUserAgentError

You can completely disable ANY annoying exception with adding fallback: (version 0.1.4 added)

import fake_useragent

ua = fake_useragent.UserAgent(fallback='your favorite Browser')
# in case if something went wrong, one more time it is REALLY!!! rare case
ua.random == 'your favorite Browser'

Want to control location of data file? (version 0.1.4 added)

import fake_useragent

# I am strongly! recommend using a version suffix
location = '/home/user/fake_useragent%s.json' % fake_useragent.VERSION

ua = fake_useragent.UserAgent(path=location)
ua.random

If you need to safe some attributes from overriding them in UserAgent by __getattr__ method use safe_attrs you can pass there attributes names. At least this will prevent you from raising FakeUserAgentError when attribute not found.

For example, when using fakeuseragent with injections <https://github.com/tailhook/injections> you need to:

import fake_useragent

ua = fake_useragent.UserAgent(safe_attrs=('__injections__',))

Please, do not use if you don't understand why you need this. This is magic for rarely extreme case.

Experiencing issues???

Make sure that you using latest version!!!

pip install --upgrade fake-useragent

Check version via python console: (version 0.1.4 added)

import fake_useragent

print(fake_useragent.VERSION)

And you are always welcome to post issues.

Please do not forget mention version that you are using.

Tests

pip install -r requirements.txt
tox

Changelog

• 0.1.14 November 5, 2022

  • Improve code quality standards using modern Python >=3.7 syntax
  • Migrated to pyproject.toml build system format + syntax check
  • Add additional classifiers to the toml file
  • Improved tox.ini file
  • Improved GitHub Actions job using pip cache
  • And various small fixes

• 0.1.13 October 21, 2022

  • Implement browsers argument, allowing you to override the browser names you want to use
  • Fix browser listing of Internet Explorer and Edge
  • Don't depend on w3schools.com anymore
  • Clean-up data (temp) file format
  • Update fallback cache server URL / use JSON Lines as file format
  • Move to GitHub Actions instead of Travis
  • Using black Python formatter in favour of Flake

• 0.1.12 March 31, 2022

  • forked

• 0.1.11 October 4, 2018

  • moved s3 + cloudfront fallback to heroku.com, cuz someone from Florida did ~25M requests last month

• 0.1.10 February 11, 2018

  • Minor fix docs cloudfront url

• 0.1.9 February 11, 2018

  • fix w3schools.com renamed IE/Edge to Edge/IE
  • moved heroku.com fallback to s3 + cloudfront
  • stop testing Python3.3 and pypy

• 0.1.8 November 2, 2017

  • fix useragentstring.com Can't connect to local MySQL server through socket

• 0.1.7 April 2, 2017

  • fix broken README.rst

• 0.1.6 April 2, 2017

  • fixes bug use_cache_server do not affected anything
  • w3schools.com <https://www.w3schools.com/browsers/browsers_stats.asp>_ moved to https
  • verify_ssl options added, by default it is True (urllib.urlopen ssl context for Python 2.7.9- and 3.4.3- is not supported)

• 0.1.5 February 28, 2017

  • added ua.edge alias to Internet Explorer
  • w3schools.com starts displaying Edge statistic
  • Python 2.6 is not tested anymore
  • use_cache_server option added
  • Increased fake_useragent.settings.HTTP_TIMEOUT to 5 seconds

• 0.1.4 December 14, 2016

  • Added custom data file location support
  • Added fallback browser support, in case of unavailable data sources
  • Added alias fake_useragent.FakeUserAgent for fake_useragent.UserAgent
  • Added alias fake_useragent.UserAgentError for fake_useragent.FakeUserAgentError
  • Reduced fake_useragent.settings.HTTP_TIMEOUT to 3 seconds
  • Started migration to new data file format
  • Simplified a lot 4+ years out of date code
  • Better thread/greenlet safety
  • Added verbose logging
  • Added safe_attrs for prevent overriding by __getattr__

• 0.1.3 November 24, 2016

  • Added hosted data file, when remote services is unavailable
  • Raises fake_useragent.errors.FakeUserAgentError in case when there is not way to download data
  • Raises fake_useragent.errors.FakeUserAgentError instead of None in case of unknown browser
  • Added gevent.sleep support in gevent patched environment when trying to download data

• X.X.X xxxxxxx xx, xxxx

  • xxxxx ?????

Authors

You can visit authors page.