以下程序执行后的结果是：spam=[1,2,3,4] spam.append(5) spam
[1,2,3,4,5]
举一反三
- 以下程序执行后的结果是：spam=4 ifspam5: spam+=1 print(spam)
- 以下程序执行后的结果是：spam=40 spam=spam+2 print(spam) A: 42 B: 40 C: error D: 2
- 执行以下代码的结果是：spam = 'hello' spam + 'world' print(spam)
- 有以下代码L = ('spam', 'Spam', 'SPAM!')下面那项是不正确的 A: L[2] 'SPAM!' 读取第三个元素 B: L[-2] 'Spam' 反向读取,读取倒数第二个元素 C: L[1:] ('Spam', 'SPAM!') 截取后2个元素 D: L[0:1] ('Spam', ') 截取中间的第2个元素
- 以下程序执行的结果是：spam=['cat','bat','rat','elephant'] spam[1:4] A: ['bat', 'rat', 'elephant'] B: ['cat', 'bat', 'rat', 'elephant'] C: ['cat', 'bat', 'rat'] D: ['bat', 'rat']
内容
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What is spam? Spam is _____ email.
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A more effective approach to controlling spam ha been the development and use of spam blockers, also known as ________. A: spam B: spam filters C: antivirus D: e-mail system
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以下哪一项不是合法的标识符。 A: spam B: spAm C: 2spam D: spam4U
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spam
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spam='he ll o world 'he='or'he in spam 输出True