python中操作csv

示例

import csv

with open('t.csv', mode='r', encoding='utf-8') as f:
  reader_obj = csv.reader(f)   # 通过reader将文件对象中的数据全部读取出来
  for line in reader_obj:
    print(line)

with open('t.csv', mode='w', encoding='utf-8') as f:
  writer_obj = csv.writer(f)   # 通过csv的writer生成写对象
  writer_obj.writerow([3, '4'])  # 通过writerow将数据写入，一行
  writer_obj.writerows([[1,2], [3,4]])   # 通过writerows将二维数组中的每个列表当作一行写入