[Python-Dev] PyString_FromFormat

"Martin v. Löwis" martin at v.loewis.de
Tue Jun 20 00:58:05 CEST 2006

Kristján V. Jónsson wrote:
> One thing I have often lamented having in PyString_FromFormat (and
> cousins, like PyErr_Format) is to be able to integrate PyObject
> pointers.  Adding something like %S and %R (for str() and repr()
> respectively) seems very useful to me.  Is there any reason why this
> isn´t there?

Not sure what the specific use case is, but I think I would use
PyString_Format instead, and use everything you can use in a %
operator. If you want to avoid explicit argument tuple building,
you can also write

  static PyObject *fmt = NULL;
  if (!fmt) fmt = PyString_FromString("Foo %s bar %s foobar %d");
  res = PyMethod_Call(fmt, "__mod__", "(OOi)", o1, o2, 42);


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