1 #!/usr/bin/env python 2 3 """ 4 Tuple objects. 5 6 Copyright (C) 2015 Paul Boddie <paul@boddie.org.uk> 7 8 This program is free software; you can redistribute it and/or modify it under 9 the terms of the GNU General Public License as published by the Free Software 10 Foundation; either version 3 of the License, or (at your option) any later 11 version. 12 13 This program is distributed in the hope that it will be useful, but WITHOUT 14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS 15 FOR A PARTICULAR PURPOSE. See the GNU General Public License for more 16 details. 17 18 You should have received a copy of the GNU General Public License along with 19 this program. If not, see <http://www.gnu.org/licenses/>. 20 """ 21 22 from __builtins__.sequence import * 23 24 class tuple(object): 25 26 "Implementation of tuple." 27 28 def __init__(self, args): pass 29 30 def __getitem__(self, index): 31 32 "Return the item or slice specified by 'index'." 33 34 return _getitem(self, index) 35 36 def __getslice__(self, start, end=None): 37 38 "Return a slice starting from 'start', with the optional 'end'." 39 40 return _tuple(_getslice(self, start, end)) 41 42 def __len__(self): pass 43 def __add__(self, other): pass 44 def __str__(self): pass 45 46 def __bool__(self): 47 48 "Tuples are true if non-empty." 49 50 return self.__len__() != 0 51 52 def __iter__(self): 53 54 "Return an iterator." 55 56 return listiterator(self) 57 58 # Special implementation methods. 59 60 def __get_single_item__(self, index): pass 61 62 # vim: tabstop=4 expandtab shiftwidth=4