The Quest Begins (The "Why") I was knee‑deep in a data‑cleaning script the other day, trying to turn a messy CSV of sensor readings into a tidy list of averages. My first instinct? Fire up a for loop, append to a temporary list, maybe call append a dozen times, and then move on.
Source: [Dev.to](https://dev.to/timevolt/python-list-comprehensions-generators-and-when-to-use-each-a-jedis-guide-nhl)