| paul@528 | 1 | #!/usr/bin/env python |
| paul@528 | 2 | |
| paul@528 | 3 | """ |
| paul@528 | 4 | Enumeration-related functions. |
| paul@528 | 5 | |
| paul@528 | 6 | Copyright (C) 2015, 2016, 2017 Paul Boddie <paul@boddie.org.uk> |
| paul@528 | 7 | |
| paul@528 | 8 | This program is free software; you can redistribute it and/or modify it under |
| paul@528 | 9 | the terms of the GNU General Public License as published by the Free Software |
| paul@528 | 10 | Foundation; either version 3 of the License, or (at your option) any later |
| paul@528 | 11 | version. |
| paul@528 | 12 | |
| paul@528 | 13 | This program is distributed in the hope that it will be useful, but WITHOUT |
| paul@528 | 14 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
| paul@528 | 15 | FOR A PARTICULAR PURPOSE. See the GNU General Public License for more |
| paul@528 | 16 | details. |
| paul@528 | 17 | |
| paul@528 | 18 | You should have received a copy of the GNU General Public License along with |
| paul@528 | 19 | this program. If not, see <http://www.gnu.org/licenses/>. |
| paul@528 | 20 | """ |
| paul@528 | 21 | |
| paul@528 | 22 | def enumerate(iterable, start=0): |
| paul@528 | 23 | |
| paul@528 | 24 | """ |
| paul@528 | 25 | Iterate over 'iterable', obtaining items and combining them with position |
| paul@528 | 26 | information, producing a sequence containing tuples of the form |
| paul@528 | 27 | (position, item). The first position is indicated by 'start' (which is zero |
| paul@528 | 28 | by default) and each subsequent positions is incremented from the one |
| paul@528 | 29 | preceding it. |
| paul@528 | 30 | """ |
| paul@528 | 31 | |
| paul@528 | 32 | l = [] |
| paul@528 | 33 | pos = start |
| paul@528 | 34 | |
| paul@528 | 35 | for i in iterable: |
| paul@528 | 36 | l.append((pos, i)) |
| paul@528 | 37 | pos += 1 |
| paul@528 | 38 | |
| paul@528 | 39 | return l |
| paul@528 | 40 | |
| paul@528 | 41 | # vim: tabstop=4 expandtab shiftwidth=4 |
