"permissions"

permissions.py

class Permissions(object):

    _permissions = {
        'read':   'lol',
        'write':  'rotflmao',
        'delete': 'wat',
        'update': 'omg'
    }

    @classmethod
    def get_permission_names(cls):
        return cls._permissions.keys()

    @classmethod
    def get_permissions(cls):
        return cls._permissions
        
    @classmethod
    def get_permission(cls, name):
        if name in cls._permissions:
            return cls._permissions[name]
        else:
            raise KeyError

    @classmethod
    def permissions(cls):
        for k, v in cls._permissions.iteritems():
            yield k, v
        
if __name__ == '__main__':
    print "all permission names: ", Permissions.get_permission_names()
    print "all permission values: ", Permissions.get_permissions()
    print "permission value for 'read': ", Permissions.get_permission('read')
    for k, v in Permissions.permissions():
        print "permission %s is %s" % (k, v)

clever