python6

 

 

 

 

 

 

 

 

 

 

 

 

#参数可以设置默认值，如果调用参数的时候没有给出改参数的值，则使用默认值进行调用
def calc_exchange_rate(amt,source,target = "USD"):
    print(target)
    if source == "CNY" and target == "USD":
        result = amt /6.7516
        return result
    elif source == "CNY" and target == "EUR":
        result = amt / 7.7512
        return  result
r = calc_exchange_rate(100,"CNY")
print(r)
r = calc_exchange_rate(100,"CNY","USD")
print(r)
r = calc_exchange_rate(100,"CNY","EUR")
print(r)


def health_check(name,age,height,weight):
    print("okookok")
#这样子调用吗，如果单单看调用的那句，很难知道数据是什么意思
#建议使用形参形式传参（关键字床惨），提高可读性，且参数无需按照顺序
health_check("a",12,170,70)

health_check(name="a",age=12,height=170,weight=70)#可以不按顺序


#混合形式传参
#定义函数的时候，可以使用*号使之后所有参数传参时必须使用关键字传参
def health_check1(name,*,age,height,weight):
    print("okookok")
#health_check1(name="a",12,height=170,weight=70)报错
health_check1("a",age=12,height=170,weight=70)

#注意，如果出现太多的参数，建议使用字典或者其他数据结果传参

结果
USD
14.811303987203035
USD
14.811303987203035
EUR
12.901228196924347
okookok
okookok
okookok

 

 

 

#序列：
#*加上列表名字
def calc(a,b,c):
    return (a + b) * c
l = [1,5,10]
print(calc(*l))

#字典
def health_check1(name,age,height,weight):
    print("okookok")
    print(name)

#在字典名字前面加入两个* 键对应形参，值对应实参即可
param = {"name" : "a","age" : 12,"height" : 170,"weight" : 70}
health_check1(**param)

#返回多个数据

def get_detail_info():
    dict1 = {
        "employee" : [{"name" : "aaa","salary" : 9999},
                      {"name" : "bbb","salary" : 9999}
                      ],
        "device" : [{"id" : 123456,"title" : "笔记本"},
                    {"id" : 123654,"title" : "台式机"}
                    ],
        "asset" :[{},{}],
        "project" : [{},{}]
    }
    return dict1

print(get_detail_info())
d = get_detail_info()
sal = d.get("employee")[0].get("salary")
print(sal)

结果
60
okookok
a
{'employee': [{'name': 'aaa', 'salary': 9999}, {'name': 'bbb', 'salary': 9999}],
 'device': [{'id': 123456, 'title': '笔记本'}, {'id': 123654, 'title': '台式机'}], 
'asset': [{}, {}], 'project': [{}, {}]}
9999

 

 

 

 

 

 

 

import random
#random.randint(1,16)


def double_ball(number):
    for j in range(0,int(number)):
        for i in range(0,6):
            red = random.randint(1,33)
            print(red,end="\t")
        blue = random.randint(1,16)
        print(blue)

phone_num_str = "匪警[110],火警[119],急救中心[120]"

def call_num(callw):
    phone_list = phone_num_str.split(",")
    for p in phone_list:
        if p.find(callw) != -1:
            print(p)

weather_str = "北京,2019,多云,8-14~上海,2019,小雨,20-25"
def get_weather(city):
    weather_list = weather_str.split("~")
    weather_data = {}
    for i in range(0, len(weather_list)):
        w = weather_list[i].split(",")
        weather = {"name": w[0], "date": w[1], "weather": w[2], "wind": w[3]}
        # print(weather)
        weather_data[weather["name"]] = weather
    if city in weather_data:
        return weather_data[city]
    else:
        return {}
while True:
    print("1-双色球")
    print("2-号码百事")
    print("3-天气预报")
    print("0-退出")
    inms = input("请输入功能编号:\t")
    if inms  == "1":
        num = input("多少组:\t")
        double_ball(num)

    elif inms == "2":
        n = input("请输入你要查询的机构或者电话好吗；\t")
        call_num(n)

    elif inms == "3":
        cname = input("你要查询那个城市的天气")
       # print(get_weather(cname))
        w = get_weather(cname)
        if "name" in w:
            print("{dat} {name} {weather} {wind}".format_map(w))
        else:
            print("未找到{0}的天气信息".format(cname))
    elif inms == "0":
        print("happy")
        break
    else:
        print("输入错误，请重新输入")e