python 比较列表相邻元素，找相同或去重
python 列表去除相邻重复相等数据（只保留一个）
参开资料：https://stackoverflow.com/questions/3460161/remove-adjacent-duplicate-elements-from-a-list
1 In [1]: import itertools 2 3 In [2]: a=[0, 1, 3, 2, 4, 4, 5, 6, 7, 8, 10, 11, 12, 13, 14, 16, 16, 17, 18, 18, 19, 20, 20, 21, 22, 22, 22, 23, 23, 23, 26, 29, 29, 30, 32, 33, 34, 32, 32, 15, 24] 4 5 In [3]: b=[k for k, _ in itertools.groupby(a)] 6 7 In [4]: print(b) 8 [0, 1, 3, 2, 4, 5, 6, 7, 8, 10, 11, 12, 13, 14, 16, 17, 18, 19, 20, 21, 22, 23, 26, 29, 30, 32, 33, 34, 32, 15, 24]
python 列表找到相邻元素相同的元素值（理解了 m=a[1:] n=a[:-1] 得到的就是要比较的前后数据之后，你就可以轻松地做玩转相邻元素啦）
参考资料：https://stackoverflow.com/questions/23452422/how-to-compare-corresponding-positions-in-a-list
1 In [22]: import numpy as np 2 3 In [23]: a=[0, 1, 3, 2, 4, 4, 5, 6, 7, 8, 10, 11, 12, 13, 14, 16, 16, 17, 18, 18, 19, 20, 20, 21, 22, 22, 22, 23, 23, 23, 26, 29, 29, 30, 32, 33, 34, 32, 32, 15, 24] 4 5 In [24]: m=a[1:] 6 7 In [25]: n=a[:-1] 8 9 In [26]: len(a) 10 Out[26]: 41 11 12 In [27]: len(m) 13 Out[27]: 40 14 15 In [28]: len(n) 16 Out[28]: 40 17 18 In [29]: c=[i[0]==i[1] for i in zip(m, n)] 19 20 In [30]: print(c) 21 [False, False, False, False, True, False, False, False, False, False, False, False, False, False, False, True, False, False, True, False, False, True, False, False, True, True, False, True, True, False, False, True, False, False, False, False, False, True, False, False] 22 23 In [31]: d=np.array(a[:-1])[c] 24 25 In [32]: print(d) 26 [ 4 16 18 20 22 22 23 23 29 32] 27 28 In [33]: result = list(set(d)) 29 30 In [34]: result 31 Out[34]: [32, 4, 16, 18, 20, 22, 23, 29]
也可以用以下的方法比较出相邻元素是否相等，即求出上面的变量 c，然后再执行后面的步骤
参考资料：https://stackoverflow.com/questions/36343688/check-if-any-adjacent-integers-in-list-are-equal
1 In [35]: import operator 2 3 In [36]: import itertools 4 5 In [37]: c2=list(map(operator.eq, a, itertools.islice(a, 1, None))) 6 7 In [38]: print(c2) 8 [False, False, False, False, True, False, False, False, False, False, False, False, False, False, False, True, False, False, True, False, False, True, False, False, True, True, False, True, True, False, False, True, False, False, False, False, False, True, False, False] 9 10 In [39]: c==c2 11 Out[39]: True