Some people, when confronted with a problem, think "I know, I'll use itertools."
Now they have
next(takewhile(not_, count())) problems.
Since I've been asked about this multiple times now:
It's a reference to "Now they have two problems" about regular expressions.
next(takewhile(not_, count())) is guaranteed to give you
0, and pretty efficiently… but it's not exactly readable. Which is the joke.
itertools does solve all your problems, but you don't always need to use it.
If you don't grasp the paradigm, go read David Beazley's presentations. Once you do: "I've got a CSV, and I want to group the rows by…" Pass a
groupby. "I've got a bunch of values, and I want to take them 4 at a time and…" Use
grouper from the recipes. "I've got a file, and I want to take each pair of adjacent lines and…"
next one copy, and
zip them. And so on.
But of course some problems have an even easier solution, and once you start thinking in terms of sequences of transformations on iterators, sometimes you'll miss the easier answer.
(The exact same thing happens with
numpy, of course.)
San Francisco, CA
Member for 2 years, 6 months
0 profile views
Last seen Sep 9 '18 at 3:53
- Stack Overflow 307.9k 307.9k 3535 gold badges498498 silver badges587587 bronze badges
- Worldbuilding 2.8k 2.8k 77 silver badges1818 bronze badges
- Linguistics 2.5k 2.5k 77 silver badges1818 bronze badges
- Meta Stack Exchange 982 982 66 silver badges1111 bronze badges
- Code Golf 467 467 22 silver badges77 bronze badges
- View network profile
Top network posts
- 928 Why is "1000000000000000 in range(1000000000000001)" so fast in Python 3?
- 286 Python assigning multiple variables to same value? list behavior
- 276 What are the differences between the threading and multiprocessing modules?
- 267 Visibility of global variables in imported modules
- 247 Sorting a set of values
- 245 Is it possible to "hack" Python's print function?
- 192 How to unpack and pack pkg file?
- View more network posts →