Python 如何拆分值列并将其附加到数据帧中？

示例问题

df =
       variant    variant_param    variant_new
  0        car    petro / young            Nan
  1       bike     fred / trail            NaN
  2     bottle              Nan            NaN

然后是否可以使用df.loc[：，'variant'：'variant\u param'].fillna（方法='ffill'，axis=1）['variant\u param'] 但从我的代码中，我只能得到这样的结果

df =
       variant    variant_param    variant_new
  0        car    petro / young  petro / young
  1       bike     fred / trail    red / trail
  2     bottle              Nan         bottle

df =
       variant    variant_param    variant_new
  0        car    petro / young          petro
  1        car    petro / young          young
  2       bike     fred / trail           fred
  3       bike     fred / trail          trail
  4     bottle              Nan         bottle

但是，我需要像这样将数据帧插入

df =
       variant    variant_param    variant_new
  0        car    petro / young  petro / young
  1       bike     fred / trail    red / trail
  2     bottle              Nan         bottle

df =
       variant    variant_param    variant_new
  0        car    petro / young          petro
  1        car    petro / young          young
  2       bike     fred / trail           fred
  3       bike     fred / trail          trail
  4     bottle              Nan         bottle

试一试

df['new'] = df['variant_param'].str.split(' / ')
df = df.explode('new')

试一试

df['new'] = df['variant_param'].str.split(' / ')
df = df.explode('new')

---

您的数据中的

variant\u param

be

gas

在

2

行吗？@QuangHoang好的，谢谢您的更正您的数据中的

variant\u param

be

gas

行吗？@QuangHoang好的，谢谢您的更正谢谢！，如果变量参数中有NaN呢？谢谢！，变量参数中是否有NaN？