A library for parsing and evaluating dice notation
A library and command line tool for parsing and evaluating dice notation.
From the command line:
import dice dice.roll('3d6')
The expression works like a simple equation parser with some extra operators.
The following operators are listed in order of precedence.
The dice (‘d’) operator takes an amount (A) and a number of sides (S), and returns a list of A random numbers between 1 and S. For example: 4d6 may return [6, 3, 2, 4].
If A is not specified, it is assumed you want to roll a single die. d6 is equivalent to 1d6.
Basic integer operations are available: 16 / 8 * 4 + 2 - 1 -> 9.
A set of rolls can be turned into an integer with the total (t) operator. 6d1t will return 6 instead of [1, 1, 1, 1, 1, 1]. Applying integer operations to a list of rolls will total them automatically.
A set of dice rolls can be sorted with the sort (s) operator. 4d6s will not change the return value, but the dice will be sorted from lowest to highest.
The lowest or highest rolls can be selected with ^ and v. 6d6^3 will keep the highest 3 rolls, whereas 6d6v3 will select the lowest 3 rolls.
The MIT License (MIT)
Copyright (c) 2013 Sam Clements
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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