题目内容

下列程序执行后,p的值是()。a = [ [ 1, 2, 3 ], [ 4, 5, 6 ], [ 7, 8, 9 ] ]p = 1for i in range( len(a) ):p *= a[i][i]

A. 45
B. 15
C. 6
D. 28

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下列代码的运行结果是()s = [1, 2, 3, 4]s.append( [5, 6] )s.append( 7 )print( len( s ) )

A. 4
B. 5
C. 6
D. 7

以下代码输出的结果是()lst = ['Tom', 'Mike', 'Peter']print( [x for x in lst if len(x)>3] )

A. ['Mike', 'Peter']
B. ['Mike']
C. ['Peter']
D. ['Tom']

以下代码的输出结果是()lst = ['Tom', 'Mike', 'Peter']print( [ len(x) for x in lst if 'e' in x ] )

A. [3, 4, 5]
B. [4, 5]
C. [4]
D. [5]

以下代码的输出结果是()lst1 = [1, 2, 3, 4, 5]lst2 = ['a', 'b']lst1.extend(lst2)lst1.insert(0,0)lst1.remove('a')lst1.reverse()print(lst1)

A. ['b', 'a', 5, 4, 3, 2, 1]
B. [0, 1, 2, 3, 4, 5, 'a', 'b']
C. [0, 1, 2, 3, 4, 5, 'b']
D. ['b', 5, 4, 3, 2, 1, 0]

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