#if-elif语句holiday_name =input("请输入节日:")ifholiday_name =='儿童节':print("是小孩子的节日!")elifholiday_name =='端午节':print("今天要吃粽子!!")elifholiday_name =='情人节':print("今天要买一束花送给她!")else:print("今天是努力的一天!") #if嵌套语句list1 = [1,3,5,9,'apple...
2)True# 方法3defboth_true(a,b):returnTrueifaandbelseFalseboth_true(1,2)Trueboth_true(1,0)...
# 方法1def both_true(a, b):returna and bboth_true(1,2)2# 方法2def both_true(a, b):ifa and b:returnTruereturnFalseboth_true(1,2)True# 方法3def both_true(a, b):returnTrueifa and belseFalseboth_true(1,2)Trueboth_true(1,0)False# 方法4def both_true(a, b):returnbool(a an...
Python 中只有模块(module),类(class)以及函数(def、lambda)才会引入新的作用域,其它的代码块(如 if/elif/else/、try/except、for/while等)是不会引入新的作用域的,也就是说这些语句内定义的变量,外部也可以访问,如下代码: >>> if True: ... msg = 'I am from Runoob' ... >>> msg 'I am from ...
If you don’t supply an explicit return statement with an explicit return value, then Python will supply an implicit return statement using None as a return value. In the above example, add_one() adds 1 to x and stores the value in result but it doesn’t return result. That’s why ...
Python函数支持默认参数,即可以给函数的参数指定默认值。当该参数没有传入相应的值时,该参数就使用默认值。 1 #默认参数 2 def involution(x,n = 2): 3 s = 1 4 while n > 0: 5 n = n - 1 6 s = s * x 7 return s 8 >>>involution(6) ...
ConditionalRuleIfThen ConePreview ConfigurationEditor ConfigurationFile ConfigureComputer ConfigureDatabaseWizard ConfirmButton 衝突 ConnectArrow ConnectedServices ConnectionBuilder ConnectionOffline ConnectionWarning ConnectionZone 連接子 ConnectTestPlan ConnectToDatabase ConnectToEnvironment ConnectToRemoteServer Co...
In this tutorial, you'll learn to specify multiple return types using type hints in Python. You'll cover working with one or several pieces of data, defining type aliases, and type checking with a third-party static type checker tool.
Next, we declare a function called calculate_price() which accepts one parameter: the name of the sandwich the customer would like to purchase. We have used Python if statements to check the name of the product against our list of sandwiches. When the product name is found, our program re...
而你后面的那种写法，是一样的道理：def build(x, y): return lambda x, y: x * x + y *...