person = {"male":{"name":"Shawn"}, "female":{"name":"Betty","age":23},"children":{"name":{"first_name":"李", "last_name":{"old":"明明","now":"铭"}},"age":4}}

def is_dict(dict_a): #此方法弃用，python已提供数据类型检测方法isinstance() 

 try: 

  dict_a.keys() 

 except Exception , data: 

  return False 

 return True 

 

def list_all_dict(dict_a): 

 if isinstance(dict_a,dict) : #使用isinstance检测数据类型 

  for x in range(len(dict_a)): 

   temp_key = dict_a.keys()[x] 

   temp_value = dict_a[temp_key] 

   print"%s : %s" %(temp_key,temp_value) 

   list_all_dict(temp_value) #自我调用实现无限遍历 

male : {'name': 'Shawn'} 

name : Shawn 

children : {'age': 4, 'name': {'first_name': '\xc0\xee', 'last_name': {'now':'\xc3\xfa', 'old': '\xc3\xf7\xc3\xf7'}}} 

age : 4 

name : {'first_name': '\xc0\xee', 'last_name': {'now': '\xc3\xfa', 'old':'\xc3\xf7\xc3\xf7'}} 

first_name : 李 

last_name : {'now': '\xc3\xfa', 'old': '\xc3\xf7\xc3\xf7'} 

now : 铭 

old : 明明 

female : {'age': 23, 'name': 'Betty'} 

age : 23 

name : Betty