csv读取功能没有给出合适的输出

Question

with open('csv_files.csv', 'r') as useFile:
    useFileReader = csv.reader(useFile)
    print("What is in.", useFileReader)

    for row in useFileReader:
        print("im in")   # not getting any output from for loop. 
        print(row)

输出： （'什么在。'，＆lt; _csv.reader对象在0x7efbf7eef910＆gt;） [以0.1秒完成]