[Python-Dev] PySet API (original) (raw)

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

[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 PyNumberInPlaceAdd(s,t) vs PyObjectCallMethod(s, "update", "(O)", t).

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

Raymond

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