29 lines
637 B
Python
29 lines
637 B
Python
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a_num = [0.01,"zhangsan",[1,2,3]]
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a_num+=[2]
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print(a_num)
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print(a_num*2)
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# 使用列表的pop()方法删除并返回指定(默认为最后一个)位置上的元素,如果给定的索引超出了列表的范围则抛出异常。
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print(a_num.pop())
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print(a_num.pop(1))
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print(a_num)
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# 删除首次出现的指定元素,如果列表中不存在要删除的元素,则抛出异常
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x = [1,2,2,3,4]
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x.remove(2)
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print(x)
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a_list = list("Hello")
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print(a_list)
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a_list.append('w')
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print(a_list)
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a_list.insert(1,2)
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print(a_list)
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# 统计指定元素在列表对象中出现的次数。
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x =[1,2,3,3,4,5]
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print(x.count(3))
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print(3 in x) |