Comprehensible Comprehensions

on YouTube ↗29m

" summary

Explains that list comprehensions are a concise tool for transforming one iterable into another and nothing else, shows how to copy/paste a for-loop into a comprehension, and demonstrates generator expressions (parentheses instead of brackets) as the right choice when the result is iterated only once. Covers set and dict comprehensions, using the list constructor or dict() instead of pointless comprehensions, warns against side effects like print inside comprehensions, and recommends to break comprehensions over multiple lines for readability.

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" chapters (11)

1. 0:00Start
2. 2:15Definitions
3. 3:30for loops
4. 5:46Breaking it down
5. 6:37Copy-pasting into a comprehension
6. 8:49Breaking up the components
7. 15:27Generator Comprehensions
8. 16:34Generator Expression Syntax
9. 18:28Loop over them right away
10. 22:20Don't abuse comprehensions
11. 26:55Not filtering or changing anything?

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