Minecraft seed grabber.

mcseed.py

#!/usr/bin/python

import nbt

def mcseed(filename):
    nbtf = nbt.NBTFile(filename, 'rb')
    return nbtf[0]['RandomSeed']

if __name__ == '__main__':
    import sys, os.path
    if os.path.isdir(sys.argv[1]):
        path = os.path.join(sys.argv[1], 'level.dat')
        s = mcseed(path)
    else:
        s = mcseed(sys.argv[1])
    print 'Seed: %s' % s