while条件: 执行代码... 实例:循环打印0-100 count=0whilecount<=100: print("loop ",count)count+=1print("-------end-------") while True:# 当这个条件成立就执行下面的代码print("count:",count)count=count+1# count +=1 <=> count = count +
With Python, you can usewhileloops to run the same task multiple times andforloops to loop once over list data. In this module, you'll learn about the two loop types and when to apply each. Learning objectives After you've completed this module, you'll be able to: ...
不用非要从语义理解记忆,将while...else作为一组语句,正常语法执行完上面的while循环就执行下面的else语句,while循环被break终止就不执行下面的语句 回到顶部 3.for循环 参考:http://www.runoob.com/python/python-for-loop.html 3.1.for循环语法 Python的for循环用于遍历任何序列中的对象,如列表或字符串 foritera...
而Python中,使用的就是两个「reserved words」保留关键词,while和for语法结构。 n=1 whilen n=n+1 print("n")如上面一段代码,是while语法最简单的例子了,当n foriin[5,4,3,2,1]: pirnt(i)这就是标准的definate loop,以for 关键词的一段循环语句。执行结果就是依次print出5,4,3,2,1。可以看出来...
A comprehensive introductory tutorial to Python loops. Learn and practice while and for loops, nested loops, the break and continue keywords, the range function and more! Oct 18, 2017 · 15 min read Contents While Loop For Loop While versus For Loops in Python Nested Loops break and continue...
Python while loops are compound statements with a header and a code block that runs until a given condition becomes false. The basic syntax of a while loop is shown below:Python Syntax while condition: In this syntax, condition is an expression that the loop evaluates for its truth value....
在Python中,“ for循环”称为迭代器。 就像while循环一样,“ For循环”也用于重复程序。 但是与while循环不同,while循环取决于条件为真还是假。 “ For循环”取决于它迭代的元素。 Example: # #Example file for working with loops # x=0 #define a while loop ...
Python 没有 C 风格的 for 循环,但是的确有 for 循环,但是原理类似于foreach 循环。 这是Python 的 for 循环风格: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 numbers=[1,2,3,5,7]forninnumbers:print(n) 不像传统的 C 风格的 for 循环,Python 的 for 循环没有索引变量。没有索引初始化、边...
whilei <6: print(i) ifi ==3: break i +=1 Try it Yourself » The continue Statement With thecontinuestatement we can stop the current iteration, and continue with the next: Example Continue to the next iteration if i is 3:
While Loops in PythonKhan Academy