根据索引值在python中加入2个csv文件

Question

在python中，我想基于索引值连接/合并2个csv文件。两个文件都有索引列，并且基于索引，我们必须将一个csv的特定列添加到另一个csv。

例如：csv 1：

Index   topic   subject
1115    fcfs       Operating System
1923    dml        Database Management System
835     jdbc       Object_oriented_programing
1866    joints     Database Management System

CSV 2：

Index  Questions
180    When an object is seen from front..
1115   Case in which fcfs is the best algo
959    How does the scheduler know the time..

输出csv：

Index topic Subject           Questions
1115   fcfs Operating System  Case in which..

请帮我用Python编写代码

Answer 1

这是pandas

的理想用例

import pandas as pd


csv_1 = pd.read_csv('csv1.csv')
csv_2 = pd.read_csv('csv2.csv')

merged = csv_1.merge(csv_2, on='Index')
merged.to_csv('output.csv', sep=',', header=True, index=False)

您可以阅读有关opening your files here和merging here的更多信息。