使用字典使其有序

參考鏈接：https://www.cnblogs.com/tianyiliang/p/8260741.html

import collections
import json

dict = {}
dict = collections.OrderedDict()

dict['a'] = ""
dict['b'] = ""
dict['e'] = ""
dict['d'] = ""
dict['c'] = ""

dict['a'] = "A"
dict['b'] = "B"
dict['d'] = "D"
dict['c'] = "C"
print dict

for k, v in dict.items():
    print v, k

f_save = open('hehe.txt', 'a')
item = json.dumps(dict)  #每一個路徑分析的結果後都需在文件中一條條地保存下來
f_save.write(item)
f_save.write('\n')

輸出結果：

文件中保存的內容：