在python3中使用csv的ploblem

Question

import csv
with open('c:/python34/test.csv', 'a', encoding='cp949') as csvfile:
    fieldnames = ['num']
     writer = csv.DictWriter(csvfile, fieldnames=fieldnames, delimiter=',', lineterminator='\n',)
     writer.writeheader()
     writer.writerow({'num': '04'})  

打开test.csv文件时

结果

  

4

我想在csv文件中写 04 ，但是当我打开test.csv文件时，它是 4 帮助我

Answer 1

尝试添加额外的＆＃39;在04之前允许它不被剥离excel：

import csv
with open('c:/python34/test.csv', 'a', encoding='cp949') as csvfile:
    fieldnames = ['num']
     writer = csv.DictWriter(csvfile, fieldnames=fieldnames, delimiter=',', lineterminator='\n',)
     writer.writeheader()
     writer.writerow({'num': '\'04'}) #changed to escaped '