我如何在熊猫数据帧的每一行的开头添加动态数量的空格？

如何在df的每一行左侧填充足够的空格以确保该行总计30个字符？

我尝试沿着这条路走,但没有成功,我相信ljust已过时：

'{: <30}'.format(df['test1'])

目前：

>>> df['test1']
0    1234jjjjjjjdddd
1    1234jjjjjjjdd
2    1234jjjjjjjddddddddd
3    1234jjjjjjjddd
4    1234jjjjjjjdddddd

我在寻找什么：

>>> df['test1']
0                   1234jjjjjjjdddd
1                     1234jjjjjjjdd
2              1234jjjjjjjddddddddd
3                    1234jjjjjjjddd
4                 1234jjjjjjjdddddd

最终解决方案：

df['test1'] = df.test1.str.rjust(30,' ') 

解决方法:

我认为您可以使用str.rjust：

print (df.test1.str.rjust(30, ' '))
0                   1234jjjjjjjdddd
1                     1234jjjjjjjdd
2              1234jjjjjjjddddddddd
3                    1234jjjjjjjddd
4                 1234jjjjjjjdddddd
Name: test1, dtype: object