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from operator import attrgetter
class CI_name(object):
def __init__(self, name):
self.name = name
self.ci_name = name.lower()
def sorted_ci(iterable):
ls = map(CI_name, iterable)
ls.sort(key=attrgetter("ci_name"))
return [el.name for el in ls]
## second implementation:
def sorted_ci(iterable):
ls = [(name.lower(), name) for name in iterable]
ls.sort()
return [el[1] for el in ls]
if __name__ == "__main__": # test
ls = "ciao Nina come Va?".split()
print sorted(ls)
print sorted_ci(ls)
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