replace dict contents

[Aahz]

In article <4106C4D2.2030103 at jessikat.fsnet.co.uk>,
Robin Becker  <robin at SPAMREMOVEjessikat.fsnet.co.uk> wrote:
>
>The actual replace part of  L1[:]=L2 happens in a single opcode and is 
>therefore atomic. The same cannot be said of the .clear, .update sequence.

Why do you care about atomicity?  Are you running a threaded app?
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