python读取csv文件的某一列或某几列

import csv
import pandas as pd

with open('D:\Data\新建文件夹\list3.','r') as csvfile:
reader = (csvfile)
column1 = [row[1]for row in reader]
print(column1)


# 下面是按照列属性读取的
d = pd.read_csv('D:\Data\新建文件夹\list3.', usecols=['case', 'roi', 'eq. diam.','x loc.','y loc.','slice no.'])
print(d)