land mine | Python Fiddle

import random
import math

gm_x = 20
gm_y = 15
gm_ratio = 0.15
gm_hit = math.floor(gm_x * gm_y * gm_ratio * random.randint(5, 10) * 0.1)
gm_start = random.randint(0, gm_x * gm_y)

ttl_cnt = 0

boardval = []
boarddisp = []
board = []
boardnb = []

def rand_val(ttl, gm_max):
  val=0
#  if random.randint(0,99) >= 50:
  if random.randint(0, 99) >= 90 and ttl < gm_max:
    ttl = ttl + 1
    val=1
  return val

for x in range(0,gm_x * gm_y):
  val=rand_val(ttl_cnt, gm_hit)
  ttl_cnt=ttl_cnt+val
  boardval.append(val)

for x in range(0,gm_y):
  board.append(["( )"] * gm_x)
    
def print_board(board):
  for row in board:
    print " ".join(row)

print "Start mine!"    
#print_board(board)

print "x: %d, y: %d, hit: %d/%d (%d%)" % (gm_x, gm_y, gm_hit, gm_x * gm_y, gm_ratio * 100)

def chk_val(col, row):
  nb=[]
  for dy in range(0, 3):
    for dx in range(0, 3):
      if col+(dx-1) >= 0 and col+(dx-1) <= gm_x-1 and row+(dy-1) >= 0 and row+(dy-1) <= gm_y-1 and (dx != 1 or dy != 1):
        nb.append((row+(dy-1)) * gm_x + (col+(dx-1)))
  return nb

def cnt_nb(col, row):
  nb=chk_val(col, row)
  ttl=0
  for cnt in range(0, len(nb)):
    #print "nb[%d]: %d, cnt: %d/%d" % (cnt, nb[cnt], cnt, len(nb))
    ttl=ttl+boardval[nb[cnt]]
    #print "%d, %d: %d" % (cnt, ttl, nb[cnt])
  #print ttl
  return ttl
   
for row in range(0, gm_y):
  for col in range(0, gm_x):
    boardnb.append(chk_val(col, row))
    boarddisp.append(cnt_nb(col, row))
    #print "(%d, %d): %s" % (col, row, cnt_nb(col, row))
    continue

for row in range(0, gm_y): 
  tmp=''
  for col in range(0, gm_x): 
    if boardval[row*gm_x + col] == 1:
      tmp=tmp+'X'
    else:
      tmp=tmp+str(boarddisp[row*gm_x + col])
  print tmp

print boardval

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