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python Csv写入指定列

具体如下: # _*_ coding:utf-8 _*_ #xiaohei.python.seo.call.me:) #win+python2.7.x import csv csvfile = file('csvtest.csv', 'wb') writer = csv.writer(csvfile) writer.writerow(['id', 'url', 'keywords']) data = [

具体如下: # _*_ coding:utf-8 _*_ #xiaohei.python.seo.call.me:) #win+python2.7.x import csv csvfile = file('csvtest.csv', 'wb') writer = csv.writer(csvfile) writer.writerow(['id', 'url', 'keywords']) data = [ ('1', 'http://www....

# -*- coding: utf8 -*-import csvl = [['1', 'Wonderful Spam'],['2', 'Lovely Spam']]#模拟数据写入一个csvwith open('eggs.csv', 'w', newline='') as csvfile: spamwriter = csv.writer(csvfile, delimiter=',', quotechar='"', quoting=csv...

import csvwith open('test.csv') as csvfile: rows = csv.reader(csvfile) with open('test1.csv','w', newline='') as f: writer = csv.writer(f) for row in rows: row.append(row[len(row)-1]) writer.writerow(row)这是一个把最后一列重复...

csv是Comma-Separated Values的缩写,是用文本文件形式储存的表格数据,比如如下的表格: 就可以存储为csv文件,文件内容是: No.,Name,Age,Score 1,mayi,18,99 2,jack,21,89 3,tom,25,95 4,rain,19,80 假设上述csv文件保存为"test.csv" 1.读文...

具体如下: # _*_ coding:utf-8 _*_ #xiaohei.python.seo.call.me:) #win+python2.7.x import csv csvfile = file('csvtest.csv', 'wb') writer = csv.writer(csvfile) writer.writerow(['id', 'url', 'keywords']) data = [

例如:# coding:UTF-8f=open('c:/python27/test.csv','r')lines=f.readlines()f.close()sts=[]for line in lines:sts.append(line.split(','))print(sts)for st in sts:print st[0],st[1]

加个id或时间列进去,打开后排序下就好了

参考方法如下: 逐行处理: for line in open("samples/sample.csv"): title, year, director = line.split(",") //以“,”号为分割,按逗号将数据分成三部分; print year, title 使用csv模块处理: import csv reader = csv.reader(open("sample...

我改了一下你的代码,实测是可以从 a.csv复制到 b.csv中 import csv def foo(): with open('a.csv', 'r') as f: reader = csv.DictReader(f) rows = [row for row in reader] if not rows: return with open('b.csv', mode='w', newline='', err...

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