对于序列s,能够返回序列s中第i到第j以k为步长的子序列的表达式是:
A. s[i:j:k]
B. s[i,j,k]
C. s[i;j;k]
D. s(i,j,k)
查看答案
以下程序的输出结果是:ss = set(" htslbht" )sorted( ss )for i in ss:print(i,end = ")
A. hlbst
B. htslbht
C. tsblth
D. hhlstt
以下程序的输出结果是:Is1 = [1,2,3,4,5]ls2 = ls1ls2. reverse( )print( Is1)
A. 5,4,3,2,1
B. [1,2,3,4,5]
C. [5,4,3,2,1]
D. 1,2,3,4,5
为以下程序填空,使得输出结果是{ 40: 'yuwen', 20: ‘yingyu', 30: 'shuxu' }的选项是:tb = { 'yingyu' :20,'shuxue :30, 'yuwen' :40 }stb = { }for it in tb. items( ) :print( it) print( stb) }
A. stb[it[1]] = it[0]
B. stb[it[1]] = stb[i[0]]
C. sb[it[1]] = tb[it[1]]
D. stb[it[1]] = tb[it[0]]
以下程序的输出结果是:img1 = [12,34,56,78]img2 = [1,2,3,4,5]def modi( ):img1 = img2print( img1)modi( )print( img1 )
A. [12, 34, 56, 78][1,2,3,4,5]
B. [1,2,3,4,5][1,2,3,4,5]
C. [12, 34,56, 78][12, 34, 56,78 ]
D. [1,2, 3,4, 5][12, 34, 56,78 ]