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[Python-Dev] setdefault's second argument

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Tim Peters wrote:> Anyone remember why setdefault's second argument is optional?Some kind of symmetry with get, probably.  if    d.get(x)returns None if x doesn't exist, it makes some kind of sense that    d.setdefault(x)returns None as well.Anyone remember why nobody managed to come up with a better namefor setdefault (which is probably the worst name ever given to a methodin the standard Python distribution) ?(if I were in charge, I'd rename it to something more informative.  I'd alsoadd a "join" built-in (similar to the good old string.join) and a "textfile" built-in (similar to open("U") plus support for encodings).  but that's me.  I wantmy code nice and tidy.)</F>

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