Flatten deeply nested iterable-of-iterables
In this exercise, we're going to work on flattening iterables.
I'd like you to write a function deep_flatten
that accepts a list of lists (or lists of tuples and lists) and returns a flattened version of that list of lists.
It should work like this:
>>> deep_flatten([[(1, 2), (3, 4)], [(5, 6), (7, 8)]])
[1, 2, 3, 4, 5, 6, 7, 8]
>>> deep_flatten([[1, [2, 3]], 4, 5])
[1, 2, 3, 4, 5]
In the examples above, we're returning a list.
Your deep_flatten
function should return an iterable, not necessarily a list.
Your deep_flatten
function can assume that no strings will be passed to it.
We'll deal with strings later.
Bonus 1
This is just a preview of the problem statement.
This exercise includes 3 bonuses and 5 hint links.
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