将列添加到具有恒定值的数据框

将列添加到具有恒定值的数据框

df['Name']='abc'

将添加新列并将所有行设置为该值：

In [79]:dfOut[79]:         Date, Open, High,  Low,  Close0  01-01-2015,  565,  600,  400,    450In [80]:df['Name'] = 'abc'dfOut[80]:         Date, Open, High,  Low,  Close Name0  01-01-2015,  565,  600,  400,    450  abc