我無法打破while循環。這是我的密碼while (True):

if (dem_arr[randx, randy] > -100):

ticker = 0

while stack:

x, y = stack.pop()

mask[x, y] = True

for dx, dy in neighbors:

nx, ny = x + dx, y + dy

print ticker

if (0 <= nx < dem_arr.shape[0] and 0 <= ny < dem_arr.shape[1] and dem_arr[x, y] > -100 and dem_arr[nx, ny] > -100 and not mask[nx, ny] and abs(dem_arr[nx, ny] - dem_arr[x, y]) <= 1): #set elevation differnce

stack.append((nx, ny)) #if point is selected (true) array position gets added to stack and process runs over again

if ((nx, ny) not in counterStack):

counterStack.append((nx, ny))

dem_copy[(nx, ny)] = 8888

if (ticker >= 121):

print 'ticker ticked'

#if in this for loop need to break out of while stack:

else:

ticker += 1

else:

print '!!!Point chosen has no data!!!'

randx = random.randint(0, row-1) #array begins at position 0,0

randy = random.randint(0, col-1)

continue

我需要做的是輸入if (ticker >= 121):我需要打破while stack:和{}有什么想法嗎？在

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