摘要：
>>> test1 = ["aaa","bbb","aaa","aaa","ccc","ccc","ddd","aaa","ddd","eee","ddd"] >>> test1.count("aaa") ## 统计指定元素出现的次数 4 >>> test1.count("bbb") 阅读全文
posted @ 2020-12-18 23:33
小鲨鱼2018
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>>> test1 = ["aaa","bbb","ccc","ddd","eee","fff"] >>> test2 = ["ddd","eee","fff","ggg","hhh","iii"] >>> test3 = test1 + test2 >>> test3 ['aa 阅读全文
posted @ 2020-12-18 22:20
小鲨鱼2018
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>>> test1 = ["aaa","bbb","ccc","aaa","aaa","bbb","ddd","eee"] >>> test2 = [] >>> for i in test1: if i not in test2: test2.append(i) >>> test2 ['aaa', 阅读全文
posted @ 2020-12-18 21:52
小鲨鱼2018
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>>> test1 ['aaa', 'bbb', 'ccc'] >>> "aaa" in test1 True >>> "ddd" in test1 False >>> "ccc" in test1 True >>> "ddd" not in test1 True >>> "aaa" not in 阅读全文
posted @ 2020-12-18 21:27
小鲨鱼2018
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1、基本用法 >>> test1 = ["aa","bb","cc","dd","ee","ff"] >>> type(test1) <class 'list'> >>> len(test1) 6 >>> test1[0:3] ## 不包含索引为3的元素 ['aa', 'bb', 'cc'] >>> 阅读全文
posted @ 2020-12-18 20:58
小鲨鱼2018
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1、循环 >>> test1 = ["aa","bb","cc","dd","ee","ff","gg"] >>> test1 ['aa', 'bb', 'cc', 'dd', 'ee', 'ff', 'gg'] >>> test2 = [] >>> test2 [] > 阅读全文
posted @ 2020-12-18 20:40
小鲨鱼2018
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1、for循环 >>> test1 = ["aa","bb","cc","dd","ee","ff","gg","hh","ii","jj","kk","ll","mm","nn"] >>> type(test1) <class 'list'> >& 阅读全文
posted @ 2020-12-18 20:14
小鲨鱼2018
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>>> test = ["aaa","bbb","ccc","ddd"] >>> type(test) <class 'list'> >>> len(test) 4 >>> test.pop() ## pop弹出 'ddd' >>> test ['aaa', 'bbb', 'ccc'] >>> te 阅读全文
posted @ 2020-12-18 19:51
小鲨鱼2018
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>>> prizes = ["aaa","bbb","ccc","ddd","eee"] >>> import random >>> for i in range(1,11,1): ## 设计抽十次 print(f"The {i}th prize is {random.choice(prizes)} 阅读全文
posted @ 2020-12-18 19:34
小鲨鱼2018
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>>> range(10) range(0, 10) >>> list(range(10)) [0, 1, 2, 3, 4, 5, 6, 7, 8, 9] >>> list(range(0,10,2)) [0, 2, 4, 6, 8] >>> list(range(0,10,3)) [0, 3, 6 阅读全文
posted @ 2020-12-18 19:09
小鲨鱼2018
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