以下不能在Python编译环境中正确执行的表达式是:
A: a={1,2,3,(4,5,6)}
B: a={1,2,3,[4,5,6]}
C: a=[1,2,3,(4,5,6)]
D: a=(1,2,3,[4,5,6])
A: a={1,2,3,(4,5,6)}
B: a={1,2,3,[4,5,6]}
C: a=[1,2,3,(4,5,6)]
D: a=(1,2,3,[4,5,6])
举一反三
- 如果 frame = [[1,2,3],[4,5,6],[7,8,9]],则rgb = frame[::-1]的值是: A: [[7, 8, 9]] B: [[1,2,3],[4,5,6],[7,8,9]] C: [[7, 8, 9], [4, 5, 6], [1, 2, 3]] D: [[1, 2, 3], [4, 5, 6]]
- 下面代码的输出结果是 ls1 = [1,2,3] ls2 = [4,5,6] print(ls1+ls2) A: [4,5,6] B: [1, 2, 3, 4, 5, 6] C: [1,2,3] D: [5,7,9]
- 以下程序的输出结果是: frame = [[1,2,3],[4,5,6],[7,8,9]] rgb = frame[::-1] print(rgb) A: [[7, 8, 9]] B: [[1,2,3],[4,5,6],[7,8,9]] C: [[7, 8, 9], [4, 5, 6], [1, 2, 3]] D: [[1, 2, 3], [4, 5, 6]]
- 以下程序的输出结果是:( )。frame = [[1,2,3],[4,5,6],[7,8,9]]rgb = frame[::-1]print(rgb) A: [[1,2,3],[4,5,6],[7,8,9]] B: [[1, 2, 3], [4, 5, 6]] C: [[7, 8, 9], [4, 5, 6], [1, 2, 3]] D: [[7, 8, 9]]
- 以下程序的输出结果是:<br/>frame<br/>= [[1,2,3],[4,5,6],[7,8,9]]; rgb<br/>= frame[::-1]; print(rgb) A: [[7, 8, 9], [4, 5, 6], [1, 2, 3]] B: [[1, 2, 3], [4, 5, 6]] C: [[7, 8, 9]] D: [[1,2,3],[4,5,6],[7,8,9]]