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Cython 0.17.2

The bug tracker has a list of the major improvements.

Features

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

General Improvements and Bug Fixes

  • 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 recognized 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.

Other changes

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

CategoryReleaseNotes

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