题目内容

给出如下代码s = 'Python is beautiful!'可以输出“python”的是( )

A. print(s[0:6].lower())
B. print(s[:–14])
C. print(s[0:6])
D. print(s[–21: –14].lower)

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给出如下代码s = 'Python is Open Source!' print(s[0:].upper())上述代码的输出结果是( )

A. PYTHON
B. PYTHON IS OPEN SOURCE
C. Python is Open Source!
D. PYTHON IS OPEN SOURCE!

下面代码的执行结果是( )a = 123456789b = "*"print("{0:{2}>{1},}\n{0:{2}^{1},}\n{0:{2}<{1},}".format(a,20,b))

A. *********123,456,789 ****123,456,789***** 123,456,789*********
B. ****123,456,789***** *********123,456,789 123,456,789*********
C. ****123,456,789***** 123,456,789********* *********123,456,789
D. *********123,456,789 123,456,789********* ****123,456,789*****

下面代码的执行结果是( )>>> x = "Happy Birthday to you!">>> x * 3

A. 系统报错
B. Happy Birthday to you!
C. Happy Birthday to you!Happy Birthday to you!Happy Birthday to you!'
D. Happy Birthday to you! Happy Birthday to you! Happy Birthday to you!

给出如下代码s= "abcdefghijklmn"print(s[1:10:3])上述代码的输出结果是( )

A. behk
B. adgj
C. beh
D. adg

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