Problem with Generator

[buran]

Hopefully there's no redundant stuff here

Given that you want to learn about generators, I will keep your approach although there are better ways to do this.

1. you can combine line 2 and 3 into one generator expression.
2. it's better to use with context manager to open the file
3. line 5 can be list directly, instead of making it generator expression and immediately make it list on the next line
4. same for lines 7-11

you may want to look at cav.DictReader module
and you can iterate over the file handler directly, instead of creating a generator

import csv
with open("techcruncher.csv") as f:
    rdr = csv.DictReader(f)
    round_a_funding = [int(item["raisedAmt"]) for item in rdr if item["round"] == 'a']

print(f'Average Round A funding is {sum(round_a_funding)/len(round_a_funding):.2f}')

as an alternative you may look at Pandas to process the data as dataframe.