Removing subdomains from a string

[akadeco]

Hi

Could anyone give me some pointers on how to remove subdomains from a string?

For example:

• If the string was bytes.com, it would stay bytes.com
• If it was subdomain.bytes .com, it would become bytes.com
• If it was subsubdomain.su bdomain.bytes.c om, it would become bytes.com

Essentially, it just needs to strip off the subdomains and produce the root domain if not already present.

Cheers
akadeco

[micmast]

I would suggest explode the string and always take the last 2 values of the returned array.

[bvdet]

To clarify micmast's suggestion, I believe he means split instead of explode.

>>> s = 'bytes.com'
>>> '.'.join(s.split('.')[-2:])
'bytes.com'
>>> s = 'subsubdomain.subdomain.bytes.com'
>>> '.'.join(s.split('.')[-2:])
'bytes.com'
>>>

[micmast]

bvdet, yes you are right :) explode is php syntax.

sorry.