ReleaseNotes 0.18

Cython 0.18

• Release date: January 28, 2013
• Downloads:
  • http://cython.org/release/Cython-0.18.tar.gz MD5
  • http://cython.org/release/Cython-0.18.zip MD5
• Git: https://github.com/cython/cython/commits/0.18

The bug tracker has a list of the major improvements.

Features

• Named Unicode escapes ("\N{...}") are supported.
• Python functions/classes provide the special attribute "__qualname__" as defined by PEP 3155.
• Added a directive overflowcheck which raises an OverflowException when arithmetic with C ints overflow. This has a modest performance penalty, but is much faster than using Python ints.
• Calls to nested Python functions are resolved at compile time.
• Type inference works across nested functions.
• py_bytes_string.decode(...) is optimised.
• C const declarations are supported in the language.

General Improvements and Bug Fixes

• Automatic C++ exception mapping didn't work in nogil functions (only in "with nogil" blocks).

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