如何仅读取CSV文件每一行的第一列

问题描述：

如何在Python中仅读取CSV文件每一行的第一列?

How to read just the first column of each row of a CSV file in Python?

我的数据是这样的:

1 abc    
2 bcd    
3 cde

，我只需要循环遍历第一列的值.

and I only need to loop trough the values of the first column.

此外，当我在calc中打开csv文件时，每一行中的数据都在同一单元格中，这正常吗?

Also, when I open the csv File in calc the data in each row is all in the same cell, is that normal?

答

import csv
with open(file) as f:
    reader = csv.reader(f, delimiter="\t")
    for i in reader:
        print i[0]

如有必要，将除臭剂更改为空格.

change the delimter to space if necessary.

reader = csv.reader(f, delimiter=" ")

没有CSV模块，

import csv
with open(file) as f:
    for line in f:
        print line.split()[0]