Parsing hostname and port from string or url

You can use urlparse to get hostname from URL string:

from urlparse import urlparse
print urlparse("http://www.website.com/abc/xyz.html").hostname # prints www.website.com

I'm not that familiar with urlparse, but using regex you'd do something like:

p = '(?:http.*://)?(?P<host>[^:/ ]+).?(?P<port>[0-9]*).*'

m = re.search(p,'http://www.abc.com:123/test')
m.group('host') # 'www.abc.com'
m.group('port') # '123'

Or, without port:

m = re.search(p,'http://www.abc.com/test')
m.group('host') # 'www.abc.com'
m.group('port') # '' i.e. you'll have to treat this as '80'

EDIT: fixed regex to also match 'www.abc.com 123'

>>> from urlparse import urlparse   
>>> aaa = urlparse('http://www.acme.com:456')

>>> aaa.hostname  
'www.acme.com'

>>> aaa.port   
456
>>>