On 05/27/2010 03:32 PM, Victor Subervi wrote:
On Thu, May 27, 2010 at 1:15 PM, Tim Chase wrote:
That should be:
', '.join(['%s'] * len(values)))
Or as I've done in the past:
', '.join('%s' for _ in values)
Huh? Can you describe that underscore to me? Fascinating!
The underscore is a valid variable-name, idiomatically used for
"I don't care about this", often seen in places like tuple
assignment:
a,_,_,d = some_4_element_tuple
So in my above case, it could also have been written as
', '.join('%s' for value in values)
', '.join('%s' for dont_care_about_the_value in values)
but the "_" idiom means "I'm iterating over 'values' but I'm not
actually using the values I get from it"
-tkc
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