Combine a 2D array into 1D without numpy

Question

The result of a list comprehension:

[['a', 'b', 'c'], ['ab', 'ac', 'bc'], ['abc']]

The challenge is to convert this into a single list, on one line, importing only itertools (if it helps)

Since most of the standard flattening idioms work fit on one line, I don't think we need a separate question. Plus, this is Python: we shouldn't care about cramming everything onto one line anyway. — DSM, Jan 11 '16 at 03:27

score 0 · Accepted Answer · answered Jan 11 '16 at 03:25

0

The easy way is with itertools.chain.from_iterable:

>>> import itertools
>>> list(itertools.chain.from_iterable([['a', 'b', 'c'], ['ab', 'ac', 'bc'], ['abc']]))
['a', 'b', 'c', 'ab', 'ac', 'bc', 'abc']

answered Jan 11 '16 at 03:25

TigerhawkT3

works like a charm, thanks. – Jesse Downing Jan 11 '16 at 03:40
Glad to hear it. You can indicate to future readers that this answer resolved your issue by clicking the "accept" button below its score. – TigerhawkT3 Jan 11 '16 at 03:43

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