Problem 1: Group and Aggregate Data

Problem Description

Write a Python program that groups a sales DataFrame by "region" and calculates the total sales amount for each region.

Input

A DataFrame with "region" and "amount" columns.

Output

Total sales amount per region.

Constraints

• At least 2 different regions.

Example Input

text
{"region": ["North","South","North"], "amount": [100,150,200]}

Example Output

text
North    300
South    150

Concepts Covered

groupby(), .sum().