convert strings in separate lists to unicode - python -

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what's best way convert every string in list (containing other lists) unicode in python?

for example:

[['a','b'], ['c','d']]

to

[[u'a', u'b'], [u'c', u'd']] 

>>> li = [['a','b'], ['c','d']]  >>> [[v.decode("utf-8") v in elem] elem in li] [[u'a', u'b'], [u'c', u'd']]

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