如何在条件中设置Pandas数据帧的多个值

Question

我想设置一个条件的pandas dataframe列的多个值，但是我收到了一条错误消息：

df[df['store_id'] == 'UK00023', ['sale','startdate','enddate']] = [100, str(datetime.now()), str(datetime.now())]

But I got this error:
    raise ValueError('Length of values does not match length of '
ValueError: Length of values does not match length of index

Answer 1

试试这个：

df.ix[df['store_id'] == 'UK00023', ['sale','startdate','enddate']] = [100, str(datetime.now()), str(datetime.now())]