"""
resource.py : unify resources
 - URLs
 - files

"""

import urlparse

class Resource(object):
    def __init__(self, url):
        self.url = url

class File(object):
    """resource of a file"""

class HTTPResource(Resource):
    """
    """
    def __init__(self, url):
        self.url = url

    def exists(self):
        """if 404 then no"""