Cython Changelog - 0.17.2 (2012-11-20) - 《Cython 3.0 Documentation》

0.17.2 (2012-11-20)

cythonize() gained a best effort compile mode that can be used to simply ignore .py files that fail to compile.

Replacing an object reference with the value of one of its cdef attributes could generate incorrect C code that accessed the object after deleting its last reference.
C-to-Python type coercions during cascaded comparisons could generate invalid C code, specifically when using the ‘in’ operator.
“obj[1,]” passed a single integer into the item getter instead of a tuple.
Cyclic imports at module init time did not work in Py3.
The names of C++ destructors for template classes were built incorrectly.
In pure mode, type casts in Cython syntax and the C ampersand operator are now rejected. Use the pure mode replacements instead.
In pure mode, C type names and the sizeof() function are no longer recognised as such and can be used as normal Python names.
The extended C level support for the CPython array type was declared too late to be used by user defined classes.
C++ class nesting was broken.
Better checking for required nullary constructors for stack-allocated C++ instances.
Remove module docstring in no-docstring mode.
Fix specialization for varargs function signatures.
Fix several compiler crashes.

An experimental distutils script for compiling the CPython standard library was added as Tools/cystdlib.py.