Python将csv导入列表

• Z时代
• 2024-01-10
• 分类：问答

我有一个大约有2000条记录的CSV文件。

每个记录都有一个字符串和一个类别：

This is the first line,Line1
This is the second line,Line2
This is the third line,Line3

我需要将此文件读入如下列表：

data = [('This is the first line', 'Line1'),
        ('This is the second line', 'Line2'),
        ('This is the third line', 'Line3')]

如何使用Python将CSV导入到我需要的列表中？

回答：

使用csv模块：

import csv
with open('file.csv', newline='') as f:
    reader = csv.reader(f)
    data = list(reader)
print(data)

输出：

[['This is the first line', 'Line1'], ['This is the second line', 'Line2'], ['This is the third line', 'Line3']]

如果你需要元组：

import csv
with open('file.csv', newline='') as f:
    reader = csv.reader(f)
    data = [tuple(row) for row in reader]
print(data)

输出：

[('This is the first line', 'Line1'), ('This is the second line', 'Line2'), ('This is the third line', 'Line3')]

旧的Python 2答案，也使用csv模块：

import csv
with open('file.csv', 'rb') as f:
    reader = csv.reader(f)
    your_list = list(reader)
print your_list
# [['This is the first line', 'Line1'],
#  ['This is the second line', 'Line2'],
#  ['This is the third line', 'Line3']]

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