Flatten a list clear solution for Flatten a List by svartmetall - python coding challenges

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Flatten a list solution in Clear category for Flatten a List by svartmetall

def flat_list(array):
    array = str(array).replace('[', '').replace(']', '').replace(',', '').strip()
    return list(map(int, array.split(' '))) if array else []

Aug. 29, 2017

Comments:

veky on July 13, 2018, 6:51 p.m.
You should use the Smart Split (without an argument). That way you don't need `if array else []`.

lpeckman on Feb. 19, 2020, 8:15 p.m.
Trying to find, what is Smart Split?

veky on Feb. 22, 2020, 4 p.m.
It's important to know that .split has a split (yeah, I know:) personality. It's in fact two functions in one. (I'll ignore maxsplit, it works the same in both.) If you call it with an argument sep, it's a much simpler function. It just finds (nonoverlapping, from left to right) substrings sep in the str you called it on, and gives you the pieces left when you cut out those seps. <pre class='brush: python'>'abacdababaefgabaabaab'.split('aba') -> ['', 'cd', 'baefg', '', 'ab'] '' 'ab' <-> <-> 'cd' '' <-> <-> 'baefg' </pre> But if you call it without an argument (what I called "Smart Split" above), it works in opposite direction: it gives you all the fields: connected components ('islands', from left to right) in your string in the sea of whitespace. <pre class='brush: python'>' one two\tthree\n four five'.split() -> ['one', 'two', 'three', 'four', 'five'] [-] [-] [---] [--] [--] </pre> So, I hope you see how `.split()` is different from `.split(' ')`, and how it can help you above. If you have any more questions, feel free to ask.

udohjeremiah_9d375806d2cd4c5f9 on May 26, 2022, 8:11 a.m.
Man that was smart!!! lol Turns out knowing a few tips and tricks would save you noisy lines from your script and makes it also hard for intermediate programmers who don't know what "smart strip" is learn a new thing from your code.

List, list and list again

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