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import json

dic = {'北京': {'豐臺': {}, '海淀': {}}}
print(dic)
dic_str = json.dumps(dic,ensure_ascii=False) # 序列化過程，把字典/其他數(shù)據(jù)類型轉(zhuǎn)換成字符串，
　　ensure_ascii=False，如果字典中有中文，希望寫入數(shù)據(jù)中也顯示中文，就要添加參數(shù)

print(dic_str)

with open('file',mode='w',encoding='utf-8') as f:
  f.write(dic_str)

import json
lst = [1,2,3,4,56]
with open('file',mode='w',encoding='utf-8') as f:
  json.dump(lst,f)

with open('file',mode='r',encoding='utf-8') as f1:
  ret = json.load(f1)
  print(ret)

import pickle
dic = {'北京':{'朝陽':'昌平'},('天津','河北'):[1,2,3]}
ret = pickle.dumps(dic)
print(ret)

str_d = pickle.loads(ret)
print(str_d)


import pickle

dic = {'北京':{'朝陽':'昌平'},('天津','河北'):[1,2,3]}
with open('file',mode='wb') as f:
  pickle.dump(dic,f)

with open('file',mode='rb') as f1:
  ret = pickle.load(f1)
  print(ret)