python CSV读写

Posted 2021-05-09

import csv
fname = 'testcsv.csv'
with open(fname,'wb') as csvfile: # 解决写入空行问题 使用wb不会再每一行后面插入空行
    csvwriter = csv.writer(csvfile,delimiter=',')
    lst= [[1,2,3],[4,5,6]]
    for item in lst:
        csvwriter.writerow(item)
# 读取操作
with open(fname,'r') as csvfile:
    rows = csv.reader(csvfile)
    for row in rows:
        print row
        print type(row) # 类型为一个list