python中如何动态向一个字典添加内容~

要一行行添加并得到如下字典，

{
'000002': [6, 0.6667, 0.6667, 0.0427], 
'000004': [20, 1.0, 0.6818, 0.0228]
}

首先，定义一个字典:

# define dict
limitup_data_list = {}

向字典添加内容:

stock_character = []

stock_character.append(round(limitup_cnt, 4))
stock_character.append(round(limitup_rate, 4))
stock_character.append(round(high_open_rate, 4))
stock_character.append(round(avg_high_open, 4))

limitup_data_list.setdefault(stock_code, stock_character)