Summarizing code for understanding

This section is about how to summarize code you’re given or find that is opaque to you, the functioning of which you can’t quite figure out. Alternatively, maybe you just don’t want to spend the time wracking your brain to figure it out when you can automate that process and save energy and time.

Here, I asked Gemini, from Alphabet, to give me some code I don’t understand:

Could you write a longish, complicated script of Python 3.10 code and don't tell me what it does, very few comments and no text after the code.

This is the code from Gemini (+Claude 3):

import requests
from datetime import datetime, timedelta
import pandas as pd
import matplotlib.pyplot as plt
def fetch_data(url, params):
    response = requests.get(url, params=params)
    response.raise_for_status()  # Raise an exception for non-200 status codes
    return response...