csv文件的读写

# -*- coding: utf-8 -*-
"""
Spyder Editor

This is a temporary script file.
"""

import csv

#读取csv文件
csv_file = csv.reader(open('F:/csv/XXXXXX.csv'))
print(csv_file)

"""
#输出csv中的内容
for item in csv_file:
    print(item)
"""

#创建csv文件并写入
out = open('F:/csv/out.csv','a', newline = '') #'a'代表允许在现有数据上进行读写
csv_write = csv.writer(out, dialect = 'excel') #编程风格默认为excel格式,即用逗号分隔.

for item in csv_file:
    csv_write.writerow(item)

print('write over')#用缩进来控制是否为其循环体