做实验的需求，字典转json保存到文件中，再从json文件中读取数据，转为字典，再将带图结构的数据存入字典，最后按key排序输出。
实现test = {}
testr = {}
for u in [2,4,1,0,3]:
for r in range(2):
testiv = {}
for i,v in zip([100,101,102],[200,201,202]):
testiv[i]=v
testr[r]=testiv
test[u] =testr
print("字典结构：")
print(test)
import json
filename = 'test1.json'
with open(filename, 'w', encoding='UTF-8') as f:
json.dump(test, f, ensure_ascii=False)
print("保存成功！")
# 从文件读取JSON格式的字符串，并将其转化为字典
with open(filename, 'r', encoding='UTF-8') as f:
global aa
aa = json.load(f)
print("读取JSON文件中的内容：")
print(aa)
uriv = defaultdict(list)
for u in aa.keys():
for r in aa['0'].keys():
ckg_graph = nx.MultiDiGraph()
for key,value in zip(aa[u][r].keys(),aa[u][r].values()):
ckg_graph.add_edge(key, value, key=r)
uriv[u].append(ckg_graph)
print("带图结构的：")
print(uriv)
print("调整顺序后：")
for i in sorted (uriv) :
print ((i, uriv[i]), end =" ")
结果：
字典结构：
{2: {0: {100: 200, 101: 201, 102: 202}, 1: {100: 200, 101: 201, 102: 202}}, 4: {0: {100: 200, 101: 201, 102: 202}, 1: {100: 200, 101: 201, 102: 202}}, 1: {0: {100: 200, 101: 201, 102: 202}, 1: {100: 200, 101: 201, 102: 202}}, 0: {0: {100: 200, 101: 201, 102: 202}, 1: {100: 200, 101: 201, 102: 202}}, 3: {0: {100: 200, 101: 201, 102: 202}, 1: {100: 200, 101: 201, 102: 202}}}
保存成功！
读取JSON文件中的内容：
{'2': {'0': {'100': 200, '101': 201, '102': 202}, '1': {'100': 200, '101': 201, '102': 202}}, '4': {'0': {'100': 200, '101': 201, '102': 202}, '1': {'100': 200, '101': 201, '102': 202}}, '1': {'0': {'100': 200, '101': 201, '102': 202}, '1': {'100': 200, '101': 201, '102': 202}}, '0': {'0': {'100': 200, '101': 201, '102': 202}, '1': {'100': 200, '101': 201, '102': 202}}, '3': {'0': {'100': 200, '101': 201, '102': 202}, '1': {'100': 200, '101': 201, '102': 202}}}
带图结构的：
defaultdict(, {'2': [, ], '4': [, ], '1': [, ], '0': [, ], '3': [, ]})
调整顺序后：
('0', [, ]) ('1', [, ]) ('2', [, ]) ('3', [, ]) ('4', [, ])
