set是一个无序且不重复的元素集合
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 | # 数据库中原有c1 = "a"c2 = "b"old_dict = { "#1":{ ‘hostname‘:c1, ‘cpu_count‘: 2, ‘mem_capicity‘: 80 }, "#2":{ ‘hostname‘:c1, ‘cpu_count‘: 2, ‘mem_capicity‘: 80 }, "#3":{ ‘hostname‘:c1, ‘cpu_count‘: 2, ‘mem_capicity‘: 80 }}# cmdb 新汇报的数据new_dict = { "#1":{ ‘hostname‘:c1, ‘cpu_count‘: 2, ‘mem_capicity‘: 800 }, "#3":{ ‘hostname‘:c1, ‘cpu_count‘: 2, ‘mem_capicity‘: 80 }, "#4":{ ‘hostname‘:c2, ‘cpu_count‘: 2, ‘mem_capicity‘: 80 }}s_old = set(old_dict.keys())s_new = set(new_dict.keys())update_set = s_old.intersection(s_new)print(update_set){‘#3‘, ‘#1‘}delete_set = s_old.difference(s_new)print(delete_set){‘#2‘}add_set = s_new.difference(update_set)print(add_set){‘#4‘} |
原文：http://www.cnblogs.com/bruceg/p/5150363.html