python - _csv.Error : iterator should return strings, not bytes(您是否以文本模式打开文件？)

Question

在我的 csv 程序开始时:

import csv     # imports the csv module
import sys      # imports the sys module

f = open('Address Book.csv', 'rb') # opens the csv file
try:
    reader = csv.reader(f)  # creates the reader object
    for row in reader:   # iterates the rows of the file in orders
        print (row)    # prints each row
finally:
    f.close()      # closing

错误是:

    for row in reader:   # iterates the rows of the file in orders
_csv.Error: iterator should return strings, not bytes (did you open the file in text mode?)

Answer 1

代替这个(以及其他):

f = open('Address Book.csv', 'rb')

这样做:

with open('Address Book.csv', 'r') as f:
    reader = csv.reader(f) 
    for row in reader:
        print(row)  

上下文管理器意味着您不需要 finally: f.close()，因为它会在出现错误或退出上下文时自动关闭文件。