[optimization] change urlparse to urlsplit

[karlcow]

In form.py , there is the function domain_name which extracts the domain name. It uses urlparse.urlparse() which is less performant than urlparse.urlsplit().

def domain_name(url):
    '''Extract the domain name of a sanitized version of the submitted URL.'''
    # Removing leading spaces
    url = url.lstrip()
    # testing if it's an http URL
    if url.startswith(SCHEMES):
        domain = urlparse.urlparse(url).netloc
    else:
        domain = None
    return domain

[zoepage]

Removing the label scope: refactor as this one is mainly for the front end refactor purpose.

[rheaparekh]

Can I make the changes if this is not yet worked upon?

[karlcow]

@rheaparekh yes
Be sure to read https://github.com/webcompat/webcompat.com/blob/master/CONTRIBUTING.md