akva wrote:
could you please refer me a link where this is specified? I couldn't
find it in python documentation
http://docs.python.org/ref/augassign.html
"An augmented assignment expression like x += 1 can be rewritten as x =
x + 1 to achieve a similar, but not exactly equal effect. In the
augmented version, x is only evaluated once. Also, when possible, the
actual operation is performed in-place, meaning that rather than
creating a new object and assigning that to the target, the old object
is modified instead."
</F>
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