Python 读取列直到行尾

Question

I have to read from an csv all columns starting from the forth column. For example from row[4] until the end of line. Any ideas how I achieve that?

for col in range(4,row):
            covid.addCell(row[col])

Answer 1

What have you tried so far? Where is your code/attempt?

import pandas as pd

df = pd.read_csv("XXX.csv")
df_selected = df.iloc[ :, 3: ] # from 4th column, reminder: in python we count from 0 

Answer 2

csv.reader returns rows as lists, so you can slice each row to get a list made of the columns from the fourth to the final column

import csv

with open('mycsv.csv', newline='') as f:
    reader = csv.reader(f)
    for row in reader:
        chunk = row[3:]
        # do something with chunk (which is a list)