将数字序列添加到 Python 中 pandas 数据帧中的列

Question

I have a data frame and I want to add a column with values 0, 0.005, 0.010, 0.015...up to the length of the df, how do I proceed? thanks

Answer 1

Only Pandas:

df = df.assign(newcol=pd.Series(range(df.shape[0])) * 0.005)

Using Numpy:

df = df.assign(newcol=np.arange(df.shape[0]) * 0.005)

Answer 2

One way to get there would be with the numpy.arange function:

import numpy as np

df['new_column'] = np.arange(0, (df.shape[0]*0.005), 0.005)