Python3 语法之函数思维导图

刺骨的言语ヽ痛彻心扉 2023-10-10 11:39 65阅读 0赞

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pob3V6aGl3ZW5nYW5n_size_16_color_FFFFFF_t_70][]

示例代码:

import io
    import sys
     
    sys.stdout = io.TextIOWrapper(sys.stdout.detach(),encoding='utf-8')
    
    def bmi(name,height,weight):
        # 根据身高和体重计算BMI 指数
        print(name + "的身高:" + str(height) + "米\t体重:" + str(weight) +"kg")
        bmi = weight/(height*height)
        print(name + "的BMI指数为:" + str(bmi))
        # BMI 指数判断
        if bmi < 18.5:
            print('营养不良，急需补充营养')
        elif bmi >= 18.5 and bmi < 24.9 :
            print("正常范围，请注意保持")
        elif bmi >= 24.9 and bmi < 29.9:
            print('体重过重,请合理膳食')
        else:
            print('你已经属于肥胖,需要减肥')
    
    bmi('周*刚',1.80,81)
    
    # python3 函数之关键字参数
    bmi(height=1.80,weight=81,name='赵四')
    
    # python3 函数之默认参数
    def defaultfn(name, st='湖南'):
        print(name +'来至于' + st)
    
    defaultfn('王小二','江西')
    defaultfn('周小白')
    
    # python3 可变参数之*parameter
    def player(*name):
        print('\t我喜欢的影视演员有:')
        for item in name:
            print(item)
    
    player('刘德华','梁家辉','周星驰','姜文','徐峥','吴京')
    
    # python3 可变参数之**parameter
    def sign(**sign):
        pass
        print('\t我喜欢的歌手演员有:')
        for key, value in sign.items():
            print('[' + key +']来至于:' + value)
    
    sign(刘德华='香港', 李宗盛='台湾')
    
    # pytho3 局部变量定义
    def variablepart():
        message = "局部变量:message"
        print(message)
    
    variablepart()
    
    # pytho3 全局变量定义
    allmessage ='全局变量，任意地方都可以被访问到'
    def variableglobal():
        global globalmessage
        globalmessage = '局部变量globalmessage,使用global 关键字进行修饰'
        print(globalmessage)
        print(allmessage)
    
    variableglobal()
    print(globalmessage)
    print(allmessage)
    
    # python3 嵌套函数
    def counter():
        i = 0
        def nested():
            nonlocal i
            i = i + 1
            print(i)
            return i
        print(i)
        return nested
    num = counter()
    print('function counter result is:' + str(num()))
    
    # python3 递归函数调用
    def foo(n):
        #实现阶乘
        if  n == 1:
            return n  # 当满种条件n==1才执行return 操作
        res = n*foo(n-1) #调用自已本身的函数的结果（再判断条件是否满足条件）给res ，
        return res
    print(foo(5))

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