我有一个叫做'df'的数据框,如下所示:
+-------+-------+-------+
| Atr1 | Atr2 | Atr3 |
+-------+-------+-------+
| A | A | A |
+-------+-------+-------+
| B | A | A |
+-------+-------+-------+
| C | A | A |
+-------+-------+-------+
我想添加一个新列,并给它增量值,得到下面更新后的DataFrame:
+-------+-------+-------+-------+
| Atr1 | Atr2 | Atr3 | Atr4 |
+-------+-------+-------+-------+
| A | A | A | 1 |
+-------+-------+-------+-------+
| B | A | A | 2 |
+-------+-------+-------+-------+
| C | A | A | 3 |
+-------+-------+-------+-------+
我该怎么获得它?
monotonically_increasing_id()
不会生成连续的数字,只会生成单调递增的数字,因此假设在更大的数据框中会失效。 - Jomonsugi