Definition and Usage Theprint()function prints the specified message to the screen, or other standard output device. The message can be a string, or any other object, the object will be converted into a string
>>> def print_lyrics(): ... print("I'm a lumberjack, and I'm okay.") ... print("I sleep all night and I work all day.") ... 为了结束函数定义,你必须输入一个空行。 定义一个函数会创建一个函数对象(function object),其类型是function: >>> print(print_lyrics) <function print_lyri...
The most straightforward way to pass arguments to a Python function is with positional arguments (also called required arguments). In the function definition, you specify a comma-separated list of parameters inside the parentheses:Python >>> def f(qty, item, price): ... print(f'{qty} {...
def greet(): """ 问候用户 """ print('Hi') 以上是一个最简单形式的函数。函数包含两部分:函数定义和函数体。 函数定义 函数定义(function definition)以关键字 def 开始,随后是函数的名称(例如 greet)。 如果函数需要一些输入信息,我们可以在括号内指定这些参数。以上示例中的 greet 函数不需要任何输入,所以...
... print("函数a") ...>>>type(a)<class'function'> 函数定义的第一行称为函数头(header),其它部分称为函数体(body)。函数头应该以冒号结束,函数体则应当整体缩进一级。依照惯例,缩进总是使用4个空格,函数体的代码语句行数不限。 本例中的print语句里的字符串使用双引号括起来。单引号和双引号的作用相...
# function definitiondeffind_square(num):result = num * num returnresult # function callsquare = find_square(3)print('Square:', square) Run Code Output Square: 9 In the above example, we have created a function namedfind_square(). The function accepts a number and returns the square of...
alist=['a1','a2','a3']blist=['1','2','3']fora,binzip(alist,blist):print a,b # a11# a22# a33 再来看一个通过两阶列表推导式遍历目录的例子: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 importos deftree(top):forpath,names,fnamesinos.walk(top):forfnameinfnames:yieldos....
print(my_function(3))print(my_function(5)) print(my_function(9)) Try it Yourself » The pass Statementfunction definitions cannot be empty, but if you for some reason have a function definition with no content, put in the pass statement to avoid getting an error....
In Python we can also give a name likehappyBirthdayEmily, and associate the name with whole song by using afunction definition. We use the Pythondefkeyword, short fordefine. Readfor now: 1 2 3 4 5 defhappyBirthdayEmily():#program does nothing as writtenprint("Happy Birthday to you!")pr...
print multiplier(2) ... You might expect the following output: 0 2 4 6 8 But you actually get: 8 8 8 8 8 Surprise! This happens due to Python’s late binding behavior which says that the values of variables used in closures are looked up at the time the inner function is calle...