def infer_declared_from_conditions(conds, namespace=None):
    ''' like infer_declared except that it is passed a set of first party
    caveat conditions as a list of string rather than a set of macaroons.
    '''
    conflicts = []
    # If we can't resolve that standard namespace, then we'll look for
    # just bare "declared" caveats which will work OK for legacy
    # macaroons with no namespace.
    if namespace is None:
        namespace = Namespace()
    prefix = namespace.resolve(STD_NAMESPACE)
    if prefix is None:
        prefix = ''
    declared_cond = prefix + COND_DECLARED

    info = {}
    for cond in conds:
        try:
            name, rest = parse_caveat(cond)
        except ValueError:
            name, rest = '', ''
        if name != declared_cond:
            continue
        parts = rest.split(' ', 1)
        if len(parts) != 2:
            continue
        key, val = parts[0], parts[1]
        old_val = info.get(key)
        if old_val is not None and old_val != val:
            conflicts.append(key)
            continue
        info[key] = val
    for key in set(conflicts):
        del info[key]
    return info
def infer_declared_from_conditions ( conds , namespace = None ) : conflicts = [ ] if namespace is None : namespace = Namespace ( ) prefix = namespace . resolve ( STD_NAMESPACE ) if prefix is None : prefix = '' declared_cond = prefix + COND_DECLARED info = { } for cond in conds : try : name , rest = parse_caveat ( cond ) except ValueError : name , rest = '' , '' if name != declared_cond : continue parts = rest . split ( ' ' , 1 ) if len ( parts ) != 2 : continue key , val = parts [ 0 ] , parts [ 1 ] old_val = info . get ( key ) if old_val is not None and old_val != val : conflicts . append ( key ) continue info [ key ] = val for key in set ( conflicts ) : del info [ key ] return info
like infer_declared except that it is passed a set of first party
    caveat conditions as a list of string rather than a set of macaroons.