21.运行下列程序,输出的结果是?( )
x=['bike','car','bus','train']
print(list(map(len, x)))
A. [0, 1, 2,3]
B. [1, 2, 3, 4]
C. [4, 3, 3, 5]
D. [4, 3, 3, 4]
21.运行下列程序,输出的结果是?( )
x=['bike','car','bus','train']
print(list(map(len, x)))
A. [0, 1, 2,3]
B. [1, 2, 3, 4]
C. [4, 3, 3, 5]
D. [4, 3, 3, 4]