Pythonforstatement iterates over the items of any sequence (such as a list or a string), in the order that they appear in the sequence. for var in sequence: do_statement(s) The above is the general syntax of the
In computer science, a for-loop (or simply for loop) is a control flow statement for specifying iteration, which allows code to be executed repeatedly。(作用:介绍了for循环是什么?)A for-loop has two parts: a header specifying the iteration, and a body which is executed once per iteration....
循环语句 loop statement 两种 循环语句: while 语句 for 语句 问题: 写一个程序,输入一个整数n,打印如下内容 这是第 1 行 这是第 2 行 这是第 3 行 ... 这是第 n 行 如何让一条语句或多条语句重复执行多次?如果i是一个变量 print("这是第&
In computer science, a for-loop (or simply for loop) is a control flow statement for specifying iteration, which allows code to be executed repeatedly。(作用:介绍了for循环是什么?) A for-loop has two parts: a header specifying the iteration, and a body which is executed once per iteration...
循环语句的执行流程是:先判断执行条件condition,当条件满足时,执行需要重复的代码描述statement,执行完statement后,再判断condition是否为true,不断的循环,直到condition结果为false,则停止执行或执行更进一步的脚本代码。 ●for循环语句 for循环的格式: for in : ...
for i in range(3): if i == 2: break print(i, end=' ') # 打印0和1 else: print("Loop completed without encountering a 'break' statement.")5.循环控制语句：range()函数：生成一个起始默认为0的序列，通常与for循环一起使用。def print_numbers(n): for i in range(1, n+1): print(i)...
# Loop statement # --- loop_stmt[stmt_ty]: | 'loop' &&':' b=block { _PyAST_Loop(b, EXTRA) } gram文件描述了python的语法,编译器会根据该文件生成对应的语法分析器(Parser)。程序员在编写Python代码时,编译器会以此来检查写下的Python代码是否有语法错误。 Python的gram文件遵循...
Exit the loop whenxis "banana", but this time the break comes before the print: fruits = ["apple","banana","cherry"] forxinfruits: ifx =="banana": break print(x) Try it Yourself » The continue Statement With thecontinuestatement we can stop the current iteration of the loop, and...
for语句实际上解决的是循环问题。在很多的高级语言中都有for循环(for loop)。 for语句其实是编程语言中针对可迭代对象的语句,它的主要作用是允许代码被重复执行。看一段来自维基百科的介绍: Incomputer science, afor-loop(or simplyfor loop) is acontrol flowstatementfor specifyingiteration, which allows code ...
languages = ['Swift', 'Python', 'Go'] # start of the loop for lang in languages: print(lang) print('---') # end of the for loop print('Last statement') Run Code Output Swift --- Python --- Go --- Last statement Here, print('Last statement') is outside the body of the...