old_list = [
    {
        name:'123',
        type:'str'
    },
    {
        name:'456',
        type:'str'
    },
    {
        name:'789',
        type:'int'
    }
]

过滤语句:

new_list = list(filter(lambda x: x.type == 'int', old_list))

最终结果:

new_list = [
    {
        name:'789',
        type:'int'
    }
]