Raymond Hettinger python at rcn.com
Wed Mar 22 04:01:39 CET 2006

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[Me]
>  There is a semantic difference between
> code like s+=t and s.update(t).  The former only works when t is a set
> and the latter works for any iterable.  When the C code corresponds to
> the Python code, that knowledge is kept intact and there is no confusion 
> between
> PyNumber_InPlaceAdd(s,t) vs PyObject_CallMethod(s, "update", "(O)", t).

Of course, that should have been s|=t and PyNumber_InPlaceOr().



Raymond

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