Note:remember to increment i, or else the loop will continue forever. Thewhileloop requires relevant variables to be ready, in this example we need to define an indexing variable,i, which we set to 1. The break
Python comes with two inbuilt keywords to interrupt loop iteration,breakandcontinue. Break Keyword In While loop The break keyword immediately terminates the while loop. Let's add a break statement to our existing code, x =1while(x<=3):print(x) x = x +1ifx ==3:breakelse:print("x is...
A Python if statement in the body of the loop will evaluate signals and potentially terminate the connection, if called for: while connection_open(): print('Ready to receive') process_messages() if should_close_connection(): close_connection() # once loop terminates print('Connection was ...
Here, the condition of the while loop is alwaysTrue. However, if the user entersend, the loop termiantes because of thebreakstatement. Pythonwhileloop with anelseclause In Python, awhileloop can have an optionalelseclause - that is executed once the loop condition isFalse. For example, coun...
How can you prevent an infinite loop in Python?Show/Hide What is the purpose of the break statement in a while loop?Show/Hide Can you use an else clause with a while loop in Python?Show/Hide Take the Quiz: Test your knowledge with our interactive “Python while Loops: Repeating Tas...
while陳述句(statement)所建立的迴圈不像for迴圈,需要在一定的範圍內迭代;也不像if陳述句,只存在執行一次或不執行的狀況。只要陳述的條件為真True,while迴圈就會持續到天荒地老,或者電腦當掉。 如果你對for迴圈或if陳述句不熟悉,可以閱讀〈Python for 迴圈(loop)的基本認識與7種操作〉、〈Python if 陳述句的...
While loop Loops are used to repeatedly execute a block of program statements. The basic loop structure in Python is while loop. Here is the syntax. Syntax: while (expression) : statement_1 statement_2 ... The while loop runs as long as the expression (condition) evaluates to True and...
The While Loop In Python The while loop statement is used to repeat a block of code till a condition is fulfilled. When we don’t know the exact number of times, a loop statement has to be executed. We make use of while loops. This way, till the test expression holds true, the loo...
使用变量:在while循环中,可以使用一个或多个变量来记录数据值。在每次循环迭代中,更新变量的值以保存数据。例如,在Python中: 代码语言:txt 复制 count = 0 while count < 10: print(count) count += 1 在上面的例子中,变量count用于记录循环迭代的次数。
Summary: in this tutorial, you will learn about PL/SQL WHILE loop statement to execute a sequence of statements as long as a specified condition is TRUE. Introduction to PL/SQL WHILE loop statement PL/SQL WHILE loop is a control structure that repeatedly executes a code block as long as a...