[SOLVED] data structure Data transformation

Data transformation

Input file: deal_level_data.csv
Output file: quarter_level_data.csv

Requirement:
1. Write a code to convert data in deal_level_data.csv to quarter_level_data.csv.
2. The code must directly read the input file and write the output file.
3. It is your own responsibility to understand the data structures in input and output files.
4. To receive full credit, your code must satisfy the following criteria:
Running time must be shorter than 30 seconds
Code should be concise, clear and well organized
Include comments at appropriate places for easier understanding
Avoid highly repetitive lines