1. n  = int(input())
    2. chessboard = [[int(i) for i in input().split()] for _ in range(n)]

    也可以这样写

    1. chessboard = list(map(int, input().split()))
    1. import sys
    3. In [9]: sys.stdin.readline()
    4. i am wemo
    5. Out[9]: 'i am wemo\n'
    7. In [10]: a = sys.stdin.readline()
    8. i am wemo 2 3 4
    10. In [11]: a
    11. Out[11]: 'i am wemo 2 3 4\n'
    13. In [12]: a.split()
    14. Out[12]: ['i', 'am', 'wemo', '2', '3', '4']