print(type(my_var)) # 输出: <class 'list'>#(列表类型的数据) 二、定义函数(Function Definition) 这两个函数虽然简单,但在编程中非常有用,因为它们可以帮助你了解数据的结构和类型,从而更好地处理数据。 在Python中,我们不仅要会使用一些常见的内置函数,而且还要会定制属于自己的函数。 定义函数(Function Def...
函数(function)是一个命名的代码块,用于执行某个任务或者返回一个数据。 有时候我们需要在程序中多次执行一个任务,而又不想多次重复编写相同的代码。此时,我们可以将这些代码封装成一个函数,然后在需要的时候使用该函数执行相应的操作。 例如,每当我们想要在屏幕打印某个数据是,可以调用 print() 函数。Python 在后台...
A function definition is an executable statement. Its execution binds the function name in the current local namespace to a function object (a wrapper around the executable code for the function). This function object contains a reference to the current global namespace as the global namespace t...
defhappyBirthdayEmily():#program does nothing as writtenprint("Happy Birthday to you!")print("Happy Birthday to you!")print("Happy Birthday, dear Emily.")print("Happy Birthday to you!") There are several parts of the syntax for a function definition to notice: Line 1: Theheadingcontainsde...
更直观一点，毕竟exec没什么人用：PEP 3105 -- Make print a function
... print() ...>>># Now call the function we just defined: ... fib(2000)011235813213455891442333776109871597 The keyworddefintroduces a functiondefinition. It must be followed by the function name and the parenthesized list of formal parameters. The statements that form the body of the function...
print("Area=",A) 三、While循环 计算从0-100所有整数的算数平方根 """ Calculate quare root of numbers 0 to 100 """ from math import * i =0 while i<= 100: print(i,"\t\t",sqrt(i)) i = i+1 print("READY") 语法: while <condiction> : ...
# 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 复制 importos deftree(top):forpath,names,fnamesinos.walk(top):forfnameinfnames:yieldos.path.join(path,fname)forname...
Print a message onto the screen: print("Hello World") Try it Yourself » 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 befo...