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Python_总结列表排重方法
阅读量:288 次
发布时间:2019-03-01

本文共 652 字,大约阅读时间需要 2 分钟。

方法1:集合的思想

lis=[1,2,3,1,2,1,1]#方法1:setlis=[1,2,3,1,2,1,1]list(set(lis))

方法2:字典+count函数

aa=[1,2,3,1,2,1,1]#方法2:字典+count函数d={i:aa.count(i) for i in aa}[i for i in d][x for x in {i:aa.count(i) for i in aa}]

**方法3:内置函数count + remove **

aa=[1,2,3,1,2,1,1]for i in aa:    if aa.count(i)>1:         for j in range(aa.count(i)-1):  #控制remove的执行次数=出现次数-1            aa.remove(i)print(aa)

#方法4:普通遍历+切片

aa=[1,2,3,1,2,1,1]new_aa=[]for i in range(len(aa)):     if aa[i] not in aa[i+1:]: #当前元素,是否在后面有出现.没有则保留        new_aa.append(aa[i])print(new_aa)```

#方法5:更加暴力的遍历

aa=[1,2,3,1,2,1,1]new_aa = []for i in aa:    if i not in new_aa:        new_aa.append(i)print(new_aa)

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