Чего это Thonny бурчит на код если задача решена?

Был массив
[[7,[0,0,0]],[8,[5,4]],[2,[1,2,3]],[7,[8,9]],[3,[1,2,3]],[2,[4,5,6]],[7,[11,22,23]],[2,[89,90,91]]]
Получили
[[2, [1, 2, 3, 4, 5, 6, 89, 90, 91]], [7, [0, 8, 9, 11, 22, 23]], [3, [1, 2, 3]], [8, [5, 4]]]

 res2 = sorted([[7,[0,0,0]],[8,[5,4]],[2,[1,2,3]],[7,[8,9]],[3,[1,2,3]],[2,[4,5,6]],[7,[11,22,23]],[2,[89,90,91]]])  
result = [1]  
m3 = []  
for i in range(len(res2) - 1):      
    if res2[i][0] == res2[i + 1][0]:          
        m2 = m3  
        m3 += m2 + list(set(res2[i][1] + res2[i + 1][1]))          
        result[-1] = [res2[i][0], list(set(m3))]  
    else: 
        result += [1] 
        m3 = [] 
result = list(filter(lambda x: isinstance(x, list),result))      
test = [i[0] for i in res2] 
counts = list(filter(lambda x: test.count(x) == 1, test)) 
single = [i for i in res2 if i[0] in counts] 
result = result + single 
print(result)