python递归函数

#相加计算，递归方式
def fact(n):
    if n > 0:
        return fact(n-1) + n
    else:
        return 0

print(fact(5))

#找出接口报文中某个字段的值

queryUserList = {
  "code": "200",
  "msg": "查询用户成功！",
  "model": {
    "user1": {
        "userAccount": "17779828882",
        "userName": "zhengying2",
        "userMobile": "17779828882",
        "userEmail": "17779828882@qq.com"
      },
      "user2": {
        "userAccount": "17779828881",
        "userName": "zhengying1",
        "userMobile": "17779828881",
        "userEmail": "17779828881@qq.com"
      },
      "user3": {
        "userAccount": "17779828880",
        "userName": "zhengying0",
        "userMobile": "17779828880",
        "userEmail": "17779828880@qq.com"
      },
      "user4": {
        "userAccount": "admin",
        "userName": "admin",
        "userMobile": "",
        "userEmail": ""
      },
    "pages": 1
  }
}

#代码如下

values = []
def get_value(getkey,dict1):
    if isinstance(dict1,dict):      #验证入参格式是否为字典
        for k,v in dict1.items():   #取出所以的键值对
            if k == getkey:     #判断所拿到的键是否是预期传入的键
                values.append(v)
            get_value(getkey,v)     #进行递归

get_value("userEmail",queryUserList)
print(values)