Python 2.7 python csv不打印副本

我们有许多csv文件，如下所示：

Name,Type
1,Fuji
2,Fuji
3,Fuji
4,Fuji
5,Washington
6,Washington
7,Washington
8,Washington
9,Washington

我们希望打印出苹果的种类而不打印副本

Fuji:6  Washington:4 Gaza:1

或

以下是我们的尝试。尽管不知什么原因它似乎不起作用

# Python 2.7 
import csv

import glob

import collections

from collections import Counter

list = glob.glob('C:Apple*.csv')

for file in list:

infile = open(file, "rb")

reader = csv.reader(infile)   

    for column in reader:

    Discipline = column[1]

    print collections.Counter(Discipline)   

 infile.close()

我以前没有使用过csv模块，但这里有一个快速尝试，我认为您可能正在尝试实现

import csv

src = r'C:\apples_before.csv'
dst = r'C:\apples_after.csv'

apples = set([])

# Read file.
with open(src, 'r') as srcfile:
    reader = csv.reader(srcfile, delimiter=',')
    for index, row in enumerate(reader):
        if index == 0:
            continue

        apples.add(row[1])

# Write file. 
# @warning: Please note that I am making an assumption in terms of the number
# component. I am assuming it is a row number.
with open(dst, 'w') as dstfile:
    writer = csv.writer(dstfile, delimiter=',')
    for index, apple in enumerate(apples):
        if index == 0:
            writer.writerow(['Name', 'Type'])

        writer.writerow([index + 1, apple])

---

您没有试图避免重复。你试过什么，到底出了什么问题？你对如何继续有什么想法吗？对不起，我发错了脚本。现在我已经更新了！谢谢。由于未知的原因，它似乎不起作用-您认为您可以提供一个关于错误的不太有用的描述吗？谢谢Yani提供的解决方案和详细的解释。我将上述输入更改为csv。您的脚本和上面的脚本没有生成任何输出文件。请问您有什么意见？谢谢我已经根据我认为你们正在努力实现的目标改变了我的答案。

import csv

src = r'C:\apples_before.csv'
dst = r'C:\apples_after.csv'

apples = set([])

# Read file.
with open(src, 'r') as srcfile:
    reader = csv.reader(srcfile, delimiter=',')
    for index, row in enumerate(reader):
        if index == 0:
            continue

        apples.add(row[1])

# Write file. 
# @warning: Please note that I am making an assumption in terms of the number
# component. I am assuming it is a row number.
with open(dst, 'w') as dstfile:
    writer = csv.writer(dstfile, delimiter=',')
    for index, apple in enumerate(apples):
        if index == 0:
            writer.writerow(['Name', 'Type'])

        writer.writerow([index + 1, apple])