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Trying to find why I can't import bsddb in python3.0, I have found that
this code fails:
"""
~ /* Some magic to make DBNotFoundError and DBKeyEmptyError derive
~ * from both DBError and KeyError, since the API only supports
~ * using one base class. */
~ PyDict_SetItemString(d, "KeyError", PyExc_KeyError);
~ PyRun_String("class DBNotFoundError(DBError, KeyError): pass\n"
~ "class DBKeyEmptyError(DBError, KeyError): pass",
~ Py_file_input, d, d);
~ DBNotFoundError = PyDict_GetItemString(d, "DBNotFoundError");
~ DBKeyEmptyError = PyDict_GetItemString(d, "DBKeyEmptyError");
~ PyDict_DelItemString(d, "KeyError");
"""
"Some magic" comment is a bit scary :-), although the code seems fairly
obvious.
This code works in Python 2.x, but fails in 3.0.
The line that fails is "PyRun_String()". The error is: "ImportError:
__build_class__ not found".
:-?
Ideas welcomed!
The code should work in python2.[3-6] and python3.0. Conditional
compilation can be used.
PS: Googling around, I see that Python 2.5 allows a tuple being used as
base for exception creation. Is this available in Python3.0?. Searching
for "PyErr_NewException" in 3.0 documentation online shows no results.
Ok, the index show the function. It should work.
I'm still interested in knowing WHY the original code fails.
- --
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