working solve not working then i click "checked"

my solve looks like this:

def house(plan):
check = plan.replace("'''","")
check = check.replace("\n","")
if check.isdigit() == True:
    return 0
newlist = plan.split('\n')

newlist.pop()
newlist.pop(0)

width = 0
lengh = 0
try:
    while newlist[0].count('#') == 0:
        newlist.pop(0)
    while newlist[-1].count('#') == 0:
        newlist.pop()
except:
    return 0

for i in newlist:
    width +=1
    long = i.rfind('#')-i.find('#')+1
    print(long,'   long')
    if long > lengh:
        lengh = long

return (width*lengh)

I have a fail on last check: Fail:house("0000##0000\n#000##000#\n##########\n##000000##\n0########0\n") Your result:40 Right result:50

but then i put this block in my editor and try, code working fine and i've got result 50.