1 #!/usr/bin/env python 2 3 """ 4 Iterator summary functions. 5 6 Copyright (C) 2015, 2016, 2017 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 def max(args): 23 24 "Implementation of max." 25 26 highest = None 27 for arg in args: 28 if highest is None or arg > highest: 29 highest = arg 30 return highest 31 32 def min(args): 33 34 "Implementation of min." 35 36 lowest = None 37 for arg in args: 38 if lowest is None or arg < lowest: 39 lowest = arg 40 return lowest 41 42 def sum(sequence, start=0): 43 44 "Sum the elements in 'sequence', adding to any indicated 'start' value." 45 46 total = start 47 for i in sequence: 48 total += i 49 return total 50 51 # vim: tabstop=4 expandtab shiftwidth=4