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