basic language question

Stephan Diehl stephan.diehl at
Thu Sep 4 18:24:58 CEST 2003

Once in a while, I get bitten by the fact, that mutating list methods such
as 'append' or 'extend' return None instead of the (mutated) list itself.
Is there a compelling reason for that? I googled around, but didn't find
anything about this.


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