添加从 0 开始的新 header 行到 csv

Question

I have a csv file and has its own column header already. I would like to add a new header row starting from 0. (0,1,2,3,4,5...)

anyone has idea how to do it?

Answer 1

Use header=None for default columns names with skip actual csv header by skiprows=1 parameter if DataFrame is created by read_csv :

df = pd.read_csv(file, header=None, skiprows=1)

If Dataframe is created different way - eg from list, dict.. is possible assign range to columns names:

df.columns = range(len(df.columns))