python无法输入最后一行并输出
我想输入:
1 2 3
4 5 6
7 8 9
然后转化为一个矩阵mat,但每次运行结果都少了最后一行‘7 8 9’,请问是什么原因呢?
代码如下
import sysmat = []
while 1:
try:
line = sys.stdin.readline().split()
row = list(map(int, line)) # [1, 2, 3]
mat.append(row) # 形成矩阵
print(mat)
except EOFError:
print('break')
break
结果如下:
回答:
>>> import sys>>> mat = []
>>>
>>> while 1:
... try:
... line = sys.stdin.readline().split()
... row = list(map(int, line)) # [1, 2, 3]
... mat.append(row) # 形成矩阵
... print(mat)
... except EOFError:
... print('break')
... break
...
1 2 3
[[1, 2, 3]]
4 5 6
[[1, 2, 3], [4, 5, 6]]
7 8 9
[[1, 2, 3], [4, 5, 6], [7, 8, 9]]
[[1, 2, 3], [4, 5, 6], [7, 8, 9], []]
Traceback (most recent call last):
File "<stdin>", line 6, in <module>
KeyboardInterrupt
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