whilei <6: i +=1 ifi ==3: continue print(i) Try it Yourself » The else Statement With theelsestatement we can run a block of code once when the condition no longer is true: Example Print a message once the condition is false: ...
Sometimes we want a part of the code to keep running, again and again, until we are ready for it to stop. Let’s see how while loops can help us do this! Python While 1 Run the example: In this code, we import time so we can use a “wait” function called sleep() . Then, ...
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 execute the prog...
Another common and extended use case of while loops in Python is to create event loops, which are infinite loops that wait for certain actions known as events. Once an event happens, the loop dispatches it to the appropriate event handler. Some classic examples of fields where you’ll find ...
The while loop is one of the first loops that you'll probably encounter when you're starting to learn how to program. It is arguably also one of the most intuitive ones to understand: if you think of the name of this loop, you will quickly understand that the word "while" has got ...
In Python, a loop inside a loop is known as a nested loop. Learn nested for loops and while loops with the examples.
使用while循环 for循环 (Theforloop) Let us first see what's the syntax, 首先让我们看看语法是什么 for [ELEMENT] in [ITERATIVE-LIST]: [statement to execute] else: [statement to execute when loop is over] [else statement is completely optional] ...
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...
Using a for loops in Python we can automate and repeat tasks in an efficient manner. So the bottom line is using the for loop we can repeat the block of statements a fixed number of times. Let’s understand this with an example. As opposed to while loops that execute until a condition...
Example 9 - Nested while loop In the example given below, We will use two while loops that creates a tuples inside the list. Here, we are creating a tuple of two elements as iterator i multiplied by count and i+1 multiplied by count. ...