使用JSON模板映射（重新排序/重命名）列

Question

我有这样一个数据框：

|customer_key|order_id|subtotal|address        |
------------------------------------------------
|12345       |O12356  |123.45  |123 Road Street|
|10986       |945764  |70.00   |634 Road Street|
|32576       |678366  |29.95   |369 Road Street|
|67896       |198266  |837.69  |785 Road Street|

我想根据包含当前列名和所需列名的以下JSON对列进行重新排序/重命名：

{
"customer_key": "cust_id",
"order_id": "transaction_id",
"address": "shipping_address",
"subtotal": "subtotal"
}

要获得结果数据帧，请执行以下操作：

|cust_id|transaction_id|shipping_address|subtotal|
--------------------------------------------------
|12345  |O12356        |123 Road Street |123.45  |
|10986  |945764        |634 Road Street |70.00   |
|32576  |678366        |369 Road Street |29.95   |
|67896  |198266        |785 Road Street |837.69  |

这是可能的吗？如果这样做更简单，那么列的顺序并不重要

Answer 1

对于重命名和排序，您需要在重命名后重新编制索引

df.rename(columns=d).reindex(columns=d.values())

或：

df.reindex(columns=d.keys()).rename(columns=d)