Skip to content

Instantly share code, notes, and snippets.

@blacktaxi blacktaxi/roll.py
Last active Jul 10, 2017

Embed
What would you like to do?
DnD die roll script
#!/usr/bin/env python
if __name__ == '__main__':
import sys, random, re
roll_re = r'(?P<rolls>\d+)d(?P<die>\d+)((?P<mod>(\+|-)\d+))?'
parsed = re.match(roll_re, sys.argv[1].strip()) if len(sys.argv) == 2 else None
if parsed is not None:
d = parsed.groupdict()
rolls, die, mod = int(d['rolls']), int(d['die']), (int(d['mod']) if d['mod'] is not None else 0)
rng = random.SystemRandom()
roll = sum(rng.randint(1, die) for _ in range(rolls)) + mod
print roll
else:
print '''roll -- a D'n'D-like dice roller. Handy when you need a random number.
USAGE:
> roll 1d6
3
> roll 1d4+5
6
How do the D'n'D rolls work?
1d4+5
/-------------^ ^ ^-----------\\
| | |
number of number of die modifier
rolls faces
In the example above, we throw a 4-faced die one time,
then add 5.
Hint: you can use any number of die faces (unlike in real life).
Enjoy.
'''
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
You can’t perform that action at this time.