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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 = [

这是一个把最后一列重复一次的例子: import csv with 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....

# -*- 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...

pip install pyexcel 读取文件以后,在重新写入文件就可以了。 import pyexcel as pe import pyexcel.ext.xls # import it to handle xls file import pyexcel.ext.xlsx # import it to handle xlsx file records = pe.get_records(file_name="y...

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...

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 = [

# -*- 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...

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

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....

删除指定行: 比如名为a的数据表中的数据: index A B C 0 1 3 5 1 2 4 6 2 7 8 9 删除第3列(索引为2的列): a.drop(2) 插入的方法,用insert,或append,详细举例见:http://www.jb51.net/article/63216.htm 这个页面的前三分之一处有添加行...

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