总结题

 1、输入：JSON {"a":"aa","b":"bb","c":{"d":"dd","e":"ee"}}   输出：字典 {'a': 'aa', 'b': 'bb', 'd': 'dd', 'e': 'ee'} 

 1 def conversion(n,the_dict):
 2     for key,value in n.items():
 3         #如果value的值是字典，递归
 4         if isinstance(value, dict):
 5             conversion(value,the_dict)
 6         else:
 7            the_dict[key] = value
 8     return the_dict
 9 #实际上JSON对象应该要先用 json.loads(r)解码，转换为python的字典
10 #但是这里如果这样直接输入这种格式的数据，会默认为字典对象，就不解码了
11 r = {"a":"aa","b":"bb","c":{"d":"dd","e":"ee"}}
12 
13 the_dict = dict()
14 print(conversion(r,the_dict))
    2、计算n!,例如n=3(计算3*2*1=6)

1 def factorial(n):
2     if n == 1:
3         return 1
4     return n*factorial(n-1)
5 
6 print(factorial(5))