Buggy python submission (verdict: Runtime Error):
h = int(input())
w = int(input())
s = [list(input() for i in range(h))]
t = s.copy()


number = []
cnt = 0

for i in range(h) :
  if 1 <= i and i <= h-2 :
    for j in range(w) :
      if j >= 1 and j < w-1 :
        number = [s[i-1][j-1],s[i-1][j],s[i-1][j+1],s[i][j-1],s[i][j+1],s[i+1][j-1],s[i+1][j],s[i+1][j+1]]
        cnt = number.count('#')
        t[i][j] = cnt
        
      elif j == 0 :
        number = [s[i-1][0],s[i+1][0],s[i-1][1],s[i][1],s[i+1][1]]
        cnt = number.count('#')
        t[i][0] = cnt
      
      elif j == w-1 :
        number = [s[i-1][w-1],s[i+1][w-1],s[i-1][w-2],s[i][w-2],s[i+1][w-2]]
        cnt = number.count('#')
        t[i][w-1] = cnt       
  
  elif i == 0 :
    for j in range(w) :
      if 1 <= j and j <= w-2 :
        number = [s[0][j-1],s[0][j+1],s[1][j-1],s[1][j],s[1][j+1]]
        cnt = number.count('#') 
        t[0][j] = cnt
      
      elif j == 0 :
        number = [s[0][1],s[1][0],s[1][1]]
        cnt = number.count('#') 
        t[0][0] = cnt
        
      elif j == w-1 :
        number = [s[0][w-2],s[1][w-2],s[1][w-1]]
        cnt = number.count('#') 
        t[0][w-1] = cnt        
  
  elif i == h-1 :
    for j in range(w) :
      if 1 <= j and j <= w-2 :
        number = [s[h-1][j-1],s[h-1][j+1],s[h-2][j-1],s[h-2][j],s[h-2][j+1]]
        cnt = number.count('#')
        t[h-1][j] = cnt
                
      elif j == 0 :
        number = [s[h-1][1],s[h-2][1],s[h-2][0]]
        cnt = number.count('#') 
        t[h-1][0] = cnt
        
      elif j == w-1 :
        number = [s[h-2][w-1],s[h-1][w-2],s[h-2][w-2]]
        cnt = number.count('#') 
        t[h-1][w-1] = cnt

for i in range(h):
  for j in range(w):
    if s[i][j] == '#':
      t[i][j] = '#'
    
  
a0 = map(str,t[0])
a1 = map(str,t[1])
a2 = map(str,t[2])
print(''.join(a0))
print(''.join(a1))
print(''.join(a2))


Fixed submission:
h, w = map(int, input().split())
ss = [[0] * w for _ in range(h)]
s = [list(input()) for _ in range(h)]
for i in range(h):
    for j in range(w):
        if s[i][j] == "#":
            for k in range(max(0, i - 1), min(h, i + 2)):
                for l in range(max(0, j - 1), min(w, j + 2)):
                    ss[k][l] += 1
for i in range(h):
    ans = ""
    for j in range(w):
        if s[i][j] == "#":
            ans += s[i][j]
        else:
            ans += str(ss[i][j])
    print(ans)

Buggy python submission (verdict: Runtime Error):
h = int(input())
w = int(input())
s = list(input() for i in range(1,h+1)
number = []
cnt = 0

for i in range(1,h+1) :
  if i != 1 and i != h :
    for j in range(1,w+1) :
      if j != 1 and j != w :
        number = [s[i-1][j-1],s[i-1][j],s[i-1][j+1],s[i][j-1],s[i][j+1],s[i+1][j-1],s[i+1][j],s[i+1][j+1]]
        cnt = number.count('#')
        s[i][j] = cnt
  
  elif i == 1 :
    for j in range(1,w+1) :
      if j != 1 and j != w :
        number = [s[i-1][j-1],s[i-1][j],s[i-1][j+1],s[i][j-1],s[i][j+1],s[i+1][j-1],s[i+1][j],s[i+1][j+1]]
        cnt = number.count('#') 
        s[i][j] = cnt
      
      elif j == 1 :
        number = [s[1][2],s[2][1],s[2][2]]
        cnt = number.count('#') 
        s[1][1] = cnt
        
      elif j == w :
        number = [s[1][w-1],s[2][w-1],s[2][w]]
        cnt = number.count('#') 
        s[1][w] = cnt        
  
  elif i == h :
    for j in range(1,w+1) :
      if j == 1 :
        number = [s[h-1][1],s[h-1][2],s[h][2]]
        cnt = number.count('#') 
        s[h][1] = cnt
        
      elif j == w :
        number = [s[h-1][w-1],s[h-1][w],s[h][w-1]]
        cnt = number.count('#') 
        s[h][w] = cnt
        
print(''.join(s))

Fixed submission:
h, w = map(int, input().split())
ss = [[0] * w for _ in range(h)]
s = [list(input()) for _ in range(h)]
for i in range(h):
    for j in range(w):
        if s[i][j] == "#":
            for k in range(max(0, i - 1), min(h, i + 2)):
                for l in range(max(0, j - 1), min(w, j + 2)):
                    ss[k][l] += 1
for i in range(h):
    ans = ""
    for j in range(w):
        if s[i][j] == "#":
            ans += s[i][j]
        else:
            ans += str(ss[i][j])
    print(ans)