小编fai*_*rry的帖子

我有几个CSV文件,如下所示:

Input
Name        Code
blackberry  1
wineberry   2
rasberry    1
blueberry   1
mulberry    2

我想为所有CSV文件添加一个新列,以便它看起来像这样:

Output
Name        Code    Berry
blackberry  1   blackberry
wineberry   2   wineberry
rasberry    1   rasberry
blueberry   1   blueberry
mulberry    2   mulberry

我到目前为止的脚本是这样的:

import csv
with open(input.csv,'r') as csvinput:
    with open(output.csv, 'w') as csvoutput:
        writer = csv.writer(csvoutput)
        for row in csv.reader(csvinput):
            writer.writerow(row+['Berry'])

(Python 3.2)

但是在输出中,脚本会跳过每一行,而新列中只有Berry:

Output
Name        Code    Berry
blackberry  1   Berry

wineberry   2   Berry

rasberry    1   Berry

blueberry   1   Berry

mulberry    2   Berry

在将数字拆分成Python 3.2中的前三位数和后两位数之后,有什么方法可以显示前导零？我的脚本返回没有前导零的数字......

我有一个看起来像这样的csv文件:

Name,Code
blackberry,20001
wineberry,02002
rasberry,30000
blueberry,03010

我想要的输出:

Name,Code,Code1,Code2
blackberry,20001,200,01
wineberry,02002,020,02
rasberry,30000,300,00   
blueberry,03010,030,10

我的剧本:

import csv
all = []
with open('aaa.csv','r') as csvinput:
    with open('bbb.csv', 'w') as csvoutput:
        reader = csv.reader(csvinput,delimiter=',')
        writer = csv.writer(csvoutput,delimiter=",", lineterminator='\n')
        row = next(reader)
        row.append('Code1')
        row.append('Code2')
        all.append(row)
        for row in reader:
            row.append(row[1][0:2])
            row.append(row[1][-2:])
            all.append(row)
        writer.writerows(all)
        print(all)

上面的脚本返回:

Name,Code,Code1,Code2
blackberry,20001,200,1
wineberry,02002,20,2
rasberry,30000,300,0    
blueberry,03010,30,10