def attr_accessor_indirection(name):
    get1 = intern('get_' + name)
    set1 = intern('set_' + name) 
    def get(instance):
        return getattr(instance, get1)()
    def set(instance, value): 
        getattr(instance, set1)(value)
    return property(get, set)

def split2(split_value, string):
    # split2('\n', 'foo\n\nbar\n') -> [ 'foo', '\n', '\n', 'bar', '\n' ]
    done = False
    result = []
    while not done:
        i = string.find(split_value)
        if i == -1:
            if string:
                result.append(string)
            done = True
        else:
            result.append(string[:i])
            result.append(split_value)
            string = string[i + len(split_value):]
    return result


def join_list(join_value, list):
    # join_list(foo, [bar, baz, monkey]) -> [bar, foo, baz, foo, monkey]
    result = []
    for x in list:
        result += [x, join_value]
    return result[:-1]

def flatten_list(lst):
    for i in xrange(len(lst)-1, -1, -1):
        if type(lst[i]) is list:
            lst[i:i+1] = flatten_list(lst[i])
    return lst