Merging a list of lists

Question

How do I merge a list of lists?

[[\'A\', \'B\', \'C\'], [\'D\', \'E\', \'F\'], [\'G\', \'H\', \'I\']]

into

[\'A\', \'B\', \         


        

Answer 1

Use itertools.chain:

>>> import itertools
>>> list(itertools.chain(*mylist))
['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I']

Wrapping the elements in HTML can be done afterwards.

>>> ['' + x + '' for x in itertools.chain(*mylist)]
['A', 'B', 'C', 'D', 'E', 'F',
'G', 'H', 'I']

Note that if you are trying to generate valid HTML you may also need to HTML escape some of the content in your strings.