问从列表中查找和为偶数的对

EN

from itertools import combinations
l1=[1,4,3,2,5,6,7]

comb=[ i for i in  combinations(l1,2) if sum(i)%2==0]

print (comb)

[(i,j) for i in lst for j in lst if i != j and (i+j)%2 == 0]

[(1, 3),
 (1, 5),
 (1, 7),
 (4, 2),
 (4, 6),
 (3, 1),
 (3, 5),
 (3, 7),
 (2, 4),
 (2, 6),
 (5, 1),
 (5, 3),
 (5, 7),
 (6, 4),
 (6, 2),
 (7, 1),
 (7, 3),
 (7, 5)]

list=list(set([1,4,3,2,5,6,7]))

output_list = []
for i in list:
    for j in range(i+1, len(list), 1):
        if (i + list[j]) % 2 == 0:
            output_list.append([i, list[j]])

print(output_list)

[[1, 3], [1, 5], [1, 7], [2, 4], [2, 6], [3, 5], [3, 7], [4, 6], [5, 7]]