prss.net
当前位置:首页 >> python Csv模块写入字典 为什么会有空的行 >>

python Csv模块写入字典 为什么会有空的行

在打开文件的open()里增加参数newline=""(空字符串)即可 即f = open("xxx.csv", "r+", encoding="gbk", newline="")

Python文档中有提到: open('eggs.csv', newline='') 也就是说,打开文件的时候多指定一个参数。Python文档中也有这样的示例: import csvwith open('eggs.csv', 'w', newline='') as csvfile: spamwriter = csv.writer(csvfile, delimiter=' ',...

把"list.csv"改成filename def csv2dict(fname): new_dict = {} with open(fname, 'rb') as f: reader = csv.reader(f, delimiter=',') fieldnames = next(reader) reader = csv.DictReader(f, fieldnames=fieldnames, delimiter=',') for row i...

l = [{"nickname":"abc","content":"I am a studet."},{"nickname":"123","content":"I want to eat."}] with open('d://111.txt','w') as file: for d in l: file.write('%s,%s\n'%(d['nickname'],d['content'])) 效果: abc,I am a studet. 12...

python中有一个读写csv文件的包,直接import csv即可。

with open('ttt.csv','w') as fh: writer = csv.writer(fh,lineterminator='\n') #一次写入一行数据 for item in data: writer.writerow(item) #一次写入多行数据 writer.writerows(data)加一个linwterminator='\n'参数

第三行第一次readlines之后,文件指针已经指向文件尾,第5行再次readlines就不会读到内容了 n = open('csvcopy.txt', 'wb')for line in open('csv.txt', 'rb'): n.write(line)n.close()这么写就好了

#其实csv文件就是用逗号隔开的文本文件,#所以只要用python中的open函数打开就可以了。#我把修改后的文件存为b_out.csv了b_int={}for i in open('b.csv').readlines()[1:]: j=i.split(',') if len(j)>2: b_int[j[0]]=j[4]a_int=open('a.csv').re...

不知道你的csv行内分隔符是什么,这里假设是逗号。程序处理book1.csv生成book2.txt,代码如下: content = []with open('book1.csv', 'r') as fr: with open('book2.txt', 'w') as fw: content = fr.readlines() print(content) for line in con...

不用这么麻烦,表头其实就是"xx","xx","xx" 分割的txt一样数据。不信你用python直接读出来试试看就知道了,用记事本打开看一下。不过得注意转移哦~~掌握了这点,你可以自己写python csv读写模块~~

网站首页 | 网站地图
All rights reserved Powered by www.prss.net
copyright ©right 2010-2021。
内容来自网络,如有侵犯请联系客服。zhit325@qq.com