sequence multiplied by -1
lanyjie at yahoo.com
Sat Sep 25 10:22:04 CEST 2010
I noticed that in python3k, multiplying a sequence by a negative integer is the same as multiplying it by 0, and the result is an empty sequence. It seems to me that there is a more meaningful symantics.
Simply put, a sequence multiplied by -1 can give a reversed sequence.
Then for any sequence "seq", and integer n>0, we can have
"seq * -n" producing "(seq * -1) * n".
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