minesweeper.py

import itertools
import sys

inp = open(sys.argv[1])
for field_count in itertools.count(1):
    a, b = map(int, inp.readline().split())
    if a == 0:
        break
    field = [inp.readline().strip() for _ in xrange(a)]
    out = [[0]*b for _ in xrange(a)]
    for ai, bi in itertools.product(xrange(a), xrange(b)):
        if field[ai][bi] == '*':
            out[ai][bi] = '*'
            for i in xrange(ai - 1, ai + 2):
                for j in xrange(bi - 1, bi + 2):
                    if 0 <= i < a and 0 <= j < b and out[i][j] != '*':
                        out[i][j] += 1
    print 'Field %s' % field_count
    print '\n'.join(''.join(map(str, i)) for i in out)
    print