Q:Pythonic way to create list of lists
python.list at tim.thechases.com
Sat Apr 11 22:25:36 CEST 2009
> I am trying to create a list of empty lists: [, , , ...] (10
> items total).
> What is the most Pythonic way to do this?
> If I use a list comprehension (as in myList = [ for item in xrange
> (0, 10)]), Netbeans warns me that 'item' is never used.
Not using Netbeans, I can't verify that the below will stop the
warning. However the variable name "_" is used conventionally to
mean "this doesn't matter". Additionally, the starting point for
xrange defaults to 0, so you can omit it. That would translate to
my_list = [ for _ in xrange(10)]
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