使用来自另一个csv文件的列创建一个新的csv文件

Question

I am trying to create a new csv file with only one column from another exsting csv file. Instead of printing Address in just one column in the csv file, Python is spreading the Address across multiple columns. What can I do to eradicate the multiple column issue.

from __future__ import absolute_import, division, print_function
import csv
from itertools import imap
from operator import itemgetter


def main():
    delimiter = ','
    with open('C:/Addresses.csv', 'rb') as input_file:
        reader = csv.reader(input_file, delimiter=delimiter)
        with open('thefirstcolumn.csv', 'wb') as output_file:
            writer = csv.writer(output_file, delimiter=delimiter)
            writer.writerows(imap(itemgetter(1), reader))


if __name__ == '__main__':
    main()

In the original file:

abcdcolumn      Address             
********-A-1    6525 Mountain   
********-A-2    6543 Mountain       
********-A-4    6579 Mountain   
********-A-5    6597 Mountain   
********-A-6    6615 Mountain       
********-A-7    6633 Mountain   

The Result in the new csv file:

    A   d   d   r   e   s   s           
    6   5   2   5       M   o   u   n   t
    6   5   4   3       M   o   u   n   t
    6   5   6   1       M   o   u   n   t
    6   5   7   9       M   o   u   n   t
    6   5   9   7       M   o   u   n   t
    6   6   1   5       M   o   u   n   t
    6   6   3   3       M   o   u   n   t

Answer 1

writer.writerows expects a list of lists, you are feeding it a list of strings.

Changing writer.writerows(imap(itemgetter(1), reader)) to something like:

for address in imap(itemgetter(1), reader):
      writer.writerow([address])

should work.

Answer 2

In general I'd use the pandas package for csv file manipulation.

import pandas
df = pandas.read_csv(input_file, delimiter=delimiter)
df['Address'].to_csv(output_file)