> So what would exception chaining mean for the C API? > > PyErr_SetString(PyExc_TypeError, "wrong type"); > PyErr_SetString(PyExc_TypeError, "can't iterate"); > > The second call would normalize the first exception and attach > it to the second as the cause attribute? But then the second > exception would have to be normalized too. To maintain delayed normalisation, there would have to be a fourth global variable holding the current "cause" (a normalised exception or None). Greg Ewing, Computer Science Dept, +--------------------------------------+ University of Canterbury, | A citizen of NewZealandCorp, a | Christchurch, New Zealand | wholly-owned subsidiary of USA Inc. | greg@cosc.canterbury.ac.nz +--------------------------------------+
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