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[英]How to extract the first instance of a sublist element using a repeated pattern?
[英]Extract element in sublist using other sublist
我有 2 个嵌套的 arrays
Test = [['c','d','b','t','j','n','k','s','p','t','k'],['l','u','y','r','c','b']]
Sample = [[1,0,1,1,2,0,3,4,0,0,4],[1,0,1,2,0,3]]
我想要 output 就像 Sample 数组中的 0 一样。我想在 Test 数组中提取相应的字母。两个数组长度相同
Output = [['d','n','p','t],['u','c']]
这应该有效:
Test = [['c','d','b','t','j','n','k','s','p','t','k'],['l','u','y','r','c','b']]
Sample = [[1,0,1,1,2,0,3,4,0,0,4],[1,0,1,2,0,3]]
final_list = []
for j in range(len(Test)):
sub_list = []
for i in range(len(Test[j])):
if Sample[j][i] == 0:
sub_list.append(Test[j][i])
final_list.append(sub_list)
final_list 是您预期的 output
import numpy as np
res = [list(np.array(a)[np.array(b) == 0]) for a,b in zip(Test, Sample)]
for
循环和zip()
完成所有工作
final_list = []
for x,y in zip(Test, Sample):
_list=[] # Temp. list to append to
for i,j in zip(x,y):
if j == 0:
_list.append(i)
final_list.append(_list) # appending to final list to create list of list
del _list # del. the temp_list to avoid duplicate values
final_list
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