TLDParse

Split a given domain into its different parts (subdomain, domain, suffix).

It was built in the aim to be very fast. To do so, it starts in reverse, going from the TLD down to any subdomains.

Installation

pip install tldparse

Basic usage

The following code will show you the basic usage you can have from this library.

from tldparse import DomainResult

parsed = DomainResult('https://example.github.io/with/some/path')
print(parsed.tld) # io
print(parsed.domain) # github
print(parsed.subdomain) # example

Common usage

A common usage is to check whereas the given domain is the fqdn or if it has subdomains

from tldparse import DomainResult

email = 'user@sub.domain.com'
mbox, domain = email.split('@')

parsed = DomainResult(domain)
assert parsed.fqdn == domain, "Please register using a domain with no subdomain parts"

Advanced usage

Replacing TLDParse with a custom one:

DomainResult class use the default TLDParse object that relies on the list of suffixes provided by Mozilla. (The list is freely available at https://publicsuffix.org/list/public_suffix_list.dat)

But you can either pass another parser, such as:

class MyCustomParser:
    def __call__(self, domain, private=True):
        # PLEASE DON'T DO THAT
        return domain.rsplit('.', 2)  # Consider a TLD has only one part. Ignores things such as ".co.uk"

from tldparse import DomainResult

parser = MyCostumParser()

result = DomainResult('example.github.com', parser=parser)
print(result.fqdn)  # github.com

result = DomainResult('bbc.co.uk', parser=parser)
print(result.fqdn)  # co.uk  # Too bad

Using private subdomains:

By default, the library will consider the subdomains as part of the fqdn for certain domain. But you can change this behavior by setting the private parameter to True.

from tldparse import DomainResult

result = DomainResult('example.github.io')
print(result.fqdn) # example.github.io

result = DomainResult('example.github.io', private=False)
print(result.fqdn) # github.io

Adding/Removing TLDs entries:

You can add/remove entries to the parser by using the add/remove methods of the tldparse object:

from .tldparse import TLDParse, DomainResult

# Adding a custom domain
parser.add('weebly.co.uk')  # added in private
result = DomainResult('example.weebly.co.uk', parser=parser, private=False)
print(result.suffix)  # 'co.uk'
print(result.domain)  # 'weebly'
print(result.subdomain)  # 'example'

result = DomainResult('example.weebly.co.uk', parser=parser)
print(result.suffix)  # 'weebly.co.uk'
print(result.domain)  # 'example'

# Removing a domain
TLDParse.remove('github.io')
result = DomainResult('example.github.io')
print(result.suffix)  # 'io'
print(result.domain)  # 'github'
print(result.subdomain)  # 'example'

Support

If you find an issue, please open a support requests, or even better, a Pull Requests :)

Thank you!