Python Pandas DateOffset 使用来自另一列的值 [英] Python Pandas DateOffset using value from another column

问题描述

我以为这会很容易，但下面的内容不适合我想要的.只是尝试通过使用另一列中的值将天数添加到预先存在的日期时间列来计算新的日期列.我下面的偏移量"列只有 1 位数字.

I was thinking this would be very easy but the below is not working for what I want. Just trying to compute a new date column by adding days to a pre-existing datetime column using values from another column. My 'offset' column below just has 1 digit numbers.

df['new_date'] = df['orig_date'].apply(lambda x: x + pd.DateOffset(days=df['offset']))

错误:timedelta days 组件不支持的类型:Series

谢谢，

推荐答案

In [12]: df['C'] = df['A'] + df['B'].apply(pd.offsets.Day)

In [13]: df
Out[13]: 
           A  B          C
0 2013-01-01  0 2013-01-01
1 2013-01-02  1 2013-01-03
2 2013-01-03  2 2013-01-05
3 2013-01-04  3 2013-01-07
4 2013-01-05  4 2013-01-09

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