uap-python

Official python implementation of the User Agent String Parser project.

Build Status

Installing

Add ua-parser[regex] to your project's dependencies, or run

$ pip install 'ua-parser[regex]'

to install in the current environment.

ua-parser supports CPython 3.9 and newer, recent pypy (supporting 3.10), and GraalPy 24.

Note

The [regex] feature is strongly recommended, the Pure python (no feature) is significantly slower, especially on non-cpython runtimes, though it is the most memory efficient.

See builtin resolvers for more explanation of the tradeoffs between the different options.

Quick Start

Retrieve all data on a user-agent string

>>> from ua_parser import parse
>>> ua_string = 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.104 Safari/537.36'
>>> parse(ua_string) # doctest: +NORMALIZE_WHITESPACE, +ELLIPSIS
Result(user_agent=UserAgent(family='Chrome',
                            major='41',
                            minor='0',
                            patch='2272',
                            patch_minor='104'),
       os=OS(family='Mac OS X',
             major='10',
             minor='9',
             patch='4',
             patch_minor=None),
       device=Device(family='Mac',
                     brand='Apple',
                     model='Mac'),
       string='Mozilla/5.0 (Macintosh; Intel Mac OS...

Any datum not found in the user agent string is set to None:

>>> parse("")
Result(user_agent=None, os=None, device=None, string='')

Extract only browser data from user-agent string

>>> from ua_parser import parse_user_agent
>>> ua_string = 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.104 Safari/537.36'
>>> parse_user_agent(ua_string)
UserAgent(family='Chrome', major='41', minor='0', patch='2272', patch_minor='104')

For specific domains, a match failure just returns None:

>>> parse_user_agent("")

Extract OS information from user-agent string

>>> from ua_parser import parse_os
>>> ua_string = 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.104 Safari/537.36'
>>> parse_os(ua_string)
OS(family='Mac OS X', major='10', minor='9', patch='4', patch_minor=None)

Extract device information from user-agent string

>>> from ua_parser import parse_device
>>> ua_string = 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.104 Safari/537.36'
>>> parse_device(ua_string)
Device(family='Mac', brand='Apple', model='Mac')

Upgrading

Upgrading from 0.x? See the upgrade guide.