检查一下这串代码:from ast import Continue def explorePixel(d,m,n,i,j): q = [(i,j)] while q: x,y = q.pop(0) if d[x][y] < 0: continue d[x][y] = 0-d[x][y] if x>0 and d[x-1][y]>0: q.append((x-1,y)) if x<m-1 and d[x+1][y]>0: q.append((x+1,y)) if y>0 and d[x][y-1]>0: q.append((x,y+1)) if y<n-1 and d[x][y+1]>0: q.append((x,y+1)) d = [] with open('C:/Users/huang/Desktop/PROGRAM/TEXT2/cellpicture.txt') as f: m,n = map(int,f.readline().strip().split(" ")) for x in range(0,m): r = list(map(int,f.readline()[:n])) d.append(r) iCellCount = 0 for i in range(m): for j in range(n): if d[i][j] <= 0: Continue iCellCount += 1 explorePixel(d,m,n,i,j) print(iCellCount)
时间: 2024-01-23 17:02:28 浏览: 60
这段代码有两个问题:
1. `from ast import Continue` 是错误的导入方式,因为 `Continue` 不是一个语法结构,而是一个关键字,无需导入。
2. 在 `explorePixel` 函数中,当发现 `d[x][y] < 0` 时,会执行 `continue` 语句。这会跳过当前循环,直接进入下一次循环。但是这段代码中,循环语句是 `while q:`,也就是说,当 `continue` 执行时,会直接跳出整个循环,而不是跳过当前循环。因此,这里应该使用 `if` 语句,而不是 `continue` 语句。
修改后的代码如下:
```python
def explorePixel(d, m, n, i, j):
q = [(i, j)]
while q:
x, y = q.pop(0)
if d[x][y] < 0:
continue
d[x][y] = 0 - d[x][y]
if x > 0 and d[x - 1][y] > 0:
q.append((x - 1, y))
if x < m - 1 and d[x + 1][y] > 0:
q.append((x + 1, y))
if y > 0 and d[x][y - 1] > 0:
q.append((x, y - 1))
if y < n - 1 and d[x][y + 1] > 0:
q.append((x, y + 1))
d = []
with open('C:/Users/huang/Desktop/PROGRAM/TEXT2/cellpicture.txt') as f:
m, n = map(int, f.readline().strip().split(" "))
for x in range(0, m):
r = list(map(int, f.readline()[:n]))
d.append(r)
iCellCount = 0
for i in range(m):
for j in range(n):
if d[i][j] <= 0:
continue
iCellCount += 1
explorePixel(d, m, n, i, j)
print(iCellCount)
```
阅读全文