li = [11,22,33,44,55,66,77,88,99]分类

方法一：

li = [11,22,33,44,55,66,77,88,99]
s = []
m = []
for i in li:
    if i <= 55:
        s.append(i)

    else:
        m.append(i)

print(s)
print(m)

方法二：

li = [11,22,33,44,55,66,77,88,99]
dic = {
    'k1':[],
    'k2':[]
}
for i in li:
    if i <= 55:
        dic['k1'].append(i)
    else:
        dic['k2'].append(i)
print(dic)