Pandas DataFrame 索引的自动递增选项

Autoincrementing option for Pandas DataFrame index

提问by Gill Bates

Is there a way to set an option for auto-incrementing the index of pandas.DataFrame when adding new rows, or to define a function for managing creation of new indices?

有没有办法在添加新行时设置自动增加 pandas.DataFrame 索引的选项，或者定义一个用于管理新索引创建的函数？

回答by Andy Hayden

You can set ignore_index=Truewhen append-ing:

您可以ignore_index=True在append-ing时设置：

In [1]: df = pd.DataFrame([[1,2],[3,4]])

In [2]: row = pd.Series([5,6])

In [3]: df.append(row, ignore_index=True)
Out[3]: 
   0  1
0  1  2
1  3  4
2  5  6