Issue Summary

The WiredTiger Python SWIG wrapper fails to compile with SWIG 4.5 and current Python 3 installations because lang/python/wiredtiger.i uses legacy Python 2 C-API names that are not declared by Python 3.14.

error: call to undeclared function 'PyInt_AsLong'
error: call to undeclared function 'PyInt_FromLong'
error: call to undeclared function 'PyString_InternFromString'

Context

• Python removed PyInt_ and PyString_ from the Python 3 C API in Python 3.0; the corresponding APIs are PyLong_ and PyUnicode_.
• SWIG 4.5 generates the wrapper successfully, but the generated wrapper contains these calls from the WiredTiger typemaps.
• The issue was reproduced using SWIG 4.5.0 and Python 3.14.6.

Proposed Solution

• Replace PyInt_AsLong with PyLong_AsLong.
• Replace PyInt_FromLong with PyLong_FromLong.
• Replace PyString_InternFromString with PyUnicode_InternFromString.
• Add or update Python wrapper build coverage so this compatibility issue is caught in CI.

Acceptance Criteria

• The Python SWIG wrapper builds successfully with SWIG 4.5 and supported Python 3 versions.
• No legacy PyInt_ or PyString_ calls remain in the Python SWIG interface.
• The Python smoke test and relevant Python API tests pass.