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On Thu, Jul 21, 2011 at 7:02 PM, Joe Pluta <joepluta@xxxxxxxxxxxxxxxxx> wrote:
I'm not sure I understand this line:
if values<= master:
You're comparing one list to be less than or equal to another?
Ah, good question. Actually, <= is overloaded with a different
meaning for sets. When both operands are sets, it's equivalent to
if values.issubset(master):
Other "mathy" shorthand notation for sets: >= for .issuperset(), |
for .union(), & for .intersection(), - for .difference(), and ^ for
.symmetric_difference() (XOR).
John
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