72 lines
1.0 KiB
Python
72 lines
1.0 KiB
Python
# 插入
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print('插入'*15)
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x = [1,2,3]
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print(x)
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x = x+ [4]
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x.append(5)
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print(x)
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x.insert(3,'w')
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x.extend(['a','b'])
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print(x*3)
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# 删除
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print("删除"*15)
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y = ["a","b","c","d",'e','f']
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del y[2]
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print(y)
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y.pop(0)
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print(y)
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y.remove('f')
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print(y)
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# 列表元素访问与计数
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print("列表元素访问与计数"*5)
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x =[1,2,3,3,4,5]
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print(x.count(3),x.index(2))
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# 列表排序
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print("列表排序"*10)
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x = [1,2,4,5,6,34,22,55,22,11,24,56,78]
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import random as r
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r.shuffle(x)
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print(x)
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x.reverse()
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print("reverse",x)
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x.sort(reverse = True)
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print('sort ',x)
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# 使用内置函数sorted对列表进行排序并返回新列表，不对原列表做任何修改。
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sorted(x)
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reversed(x)
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# 打包
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print("打包"*10)
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a = [1,2,3]
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b = [4,5,6]
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print(list(zip(a,b)))
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# 枚举
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print("枚举"*10)
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for item in enumerate('abcdef'):
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print(item)
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# 遍历列表的三种方式
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print("遍历列表的三种方式"*10)
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a = ['a','b','c','d','e','f']
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for i in a:
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print(i)
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for i in range(len(a)):
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print(i,a[i])
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for i,ele in enumerate(a):
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print(i,ele)
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