On 15/12/2011 16:48, Roy Smith wrote:
I've got a list, ['a', 'b', 'c', 'd']. I want to generate the string, "a, b, c, and
d" (I'll settle for no comma after 'c'). Is there some standard way to do this,
handling all the special cases?
[] ==> ''
['a'] ==> 'a'
['a', 'b'] ==> 'a and b'
['a', 'b', 'c', 'd'] ==> 'a, b, and c'
It seems like the kind of thing django.contrib.humanize would handle, but alas,
it doesn't.
How about this:
def and_list(items):
if len(items) <= 2:
return " and ".join(items)
return ", ".join(items[ : -1]) + ", and " + items[-1]
print(and_list([]))
print(and_list(['a']))
print(and_list(['a', 'b']))
print(and_list(['a', 'b', 'c']))
print(and_list(['a', 'b', 'c', 'd']))
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