This module allows you to get the public suffix of a domain name using the Public Suffix List from http://publicsuffix.org
A public suffix is a domain suffix under which you can register domain names. Some examples of public suffixes are .com, .co.uk and pvt.k12.wy.us. Accurately knowing the public suffix of a domain is useful when handling web browser cookies, highlighting the most important part of a domain name in a user interface or sorting URLs by web site.
This Python module includes with a copy of the Public Suffix List so that it is usable out of the box. Newer versions try to provide reasonably fresh copies of this list. It also includes a convenience method to fetch the latest list.
The code is a fork of the publicsuffix package and uses the same module name and base API.
The code is MIT-licensed and the publicsuffix data list is MPL-2.0-licensed.
Install with:
pip install publicsuffix2
The module provides a function to query a domain name:
>>> from publicsuffix import get_public_suffix
>>> get_public_suffix('www.example.com')
'example.com'
>>> get_public_suffix('www.example.co.uk')
'example.co.uk'
>>> get_public_suffix('www.super.example.co.uk')
'example.co.uk'
This function loads and caches the public suffix list.
For more control and compatibility, there is also a class that parses a Public Suffix List and allows the same queries on individual domain names:
>>> from publicsuffix import PublicSuffixList
>>> psl= PublicSuffixList()
>>> psl.get_public_suffix('www.example.com')
'example.com'
>>> psl.get_public_suffix('www.example.co.uk')
'example.co.uk'
>>> psl.get_public_suffix('www.super.example.co.uk')
'example.co.uk'
Note that the host part of an URL can contain strings that are
not plain DNS domain names (IP addresses, Punycode-encoded names, name in
combination with a port number or a username, etc.). It is up to the
caller to ensure only domain names are passed to the get_public_suffix()
method.
The get_public_suffix function and the PublicSuffixList class initializer accept an optional argument pointing to a public suffix file. This can either be a file path, an iterable of public suffix lines, or a file-like object pointing to an opened list. The fetch function fetches the latest list:
>>> from publicsuffix import get_public_suffix, fetch
>>> latest = fetch()
>>> get_public_suffix('www.example.com', latest)
'example.com'
This will use the cached latest loaded above:
>>> get_public_suffix('www.example.co.uk')
'example.co.uk'
Get a local copy of the development repository. The development takes
place in the develop branch. Stable releases are tagged in the master
branch:
git clone https://github.com/pombredanne/python-publicsuffix2.git
This code is forked from Tomaž Šolc's fork of David Wilson's code originally at: https://www.tablix.org/~avian/git/publicsuffix.git Copyright (c) 2014 Tomaž Šolc <tomaz.solc@tablix.org>
The API is essentially the same as publicsuffix including using the same package name to allow a straight forward replacement.
David Wilson's code was originally at: from http://code.google.com/p/python-public-suffix-list/ Copyright (c) 2009 David Wilson
The code is MIT-licensed. The vendored public suffix list data from Mozilla is under the MPL-2.0.
Copyright (c) 2015 nexB Inc. Copyright (c) 2014 Tomaž Šolc <tomaz.solc@tablix.org> Copyright (c) 2009 David Wilson
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The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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