ó i­:Oc@sdZddlZeedƒs9ddlZejZneZeedƒsfddlZejZneZd„ZdZ dS(s8 In python-2.4, a builtin :class:`set` type was added to python. This module provides a function to emulate that on python-2.3 by using the :mod:`sets` module. :func:`set` Create a set. If running on python 2.4+ this is the :class:`set` constructor. If using python-2.3, it's :class:`sets.Set`. :func:`frozenset` Create a frozenset. If running on python2.4+ this is the :class:`frozenset` constructor. If using python-2.3, it's :class:`sets.ImmutableSet`. .. versionchanged:: 0.2.0 API: kitchen.pycompat24 1.0.0 Added set and frozenset iÿÿÿÿNtsett frozensetcCs:ttdƒstt_nttdƒs6tt_ndS(shIf there's no set builtin, us the :mod:`sets` module to make one This function makes sure that a :class:`set` and :class:`frozenset` type are available in the :mod:`__builtin__` namespace. Since the function checks whether :class:`set` and :class:`frozenset` are already present in the :mod:`__builtin__` namespace and refuses to overwrite those if found, it's safe to call this in multiple places and in scripts run under python-2.4+, where a more efficient set implementation is already present in the :mod:`__builtin__` namespace. However, since this function modifies :mod:`__builtin__` there's no need to call it more than once so you likely want to do something like this when your program loads:: myprogram/__init__.py: from kitchen.pycompat24 import sets builtinset.add_builtin_set() You can then use :func:`set` and :func:`frozenset` anywhere in your code:: myprogram/compute.py: def math_students(algebra_student_list, geometry_student_list): return set(algebra_student_list) union set(geometry_student_list) RRN(thasattrt __builtin__RR(((sD/usr/lib/python2.7/site-packages/kitchen/pycompat24/sets/__init__.pytadd_builtin_set;s R(sadd_builtin_setssets frozenset( t__doc__RRtsetstSetRt ImmutableSetRRt__all__(((sD/usr/lib/python2.7/site-packages/kitchen/pycompat24/sets/__init__.pyt's      !