- _VALID_URL_TEMPLATE = r'http://(?:(?:www\.)?%(host)s/(?:file|video|mobile/#/videos)/|(?:(?:embed|www)\.)%(host)s/embed\.php\?(?:.*?&)?v=)(?P<id>[a-z\d]{13})'
- _VALID_URL = _VALID_URL_TEMPLATE % {'host': 'novamov\.com'}
+ _VALID_URL_TEMPLATE = r'''(?x)
+ http://
+ (?:
+ (?:www\.)?%(host)s/(?:file|video|mobile/\#/videos)/|
+ (?:(?:embed|www)\.)%(host)s/embed(?:\.php|/)?\?(?:.*?&)?\bv=
+ )
+ (?P<id>[a-z\d]{13})
+ '''
+ _VALID_URL = _VALID_URL_TEMPLATE % {'host': r'novamov\.com'}