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...
The while loop runs as long as the expression (condition) evaluates to True and execute the program block. The condition is checked every time at the beginning of the loop and the first time when the expression evaluates to False, the loop stops without executing any remaining statement(s). ...
This is a normal while loop without break statements. The condition of the while loop is at the top and the loop terminates when this condition isFalse. Flowchart of Loop With Condition at Top Example #2: Loop with condition at the top # Program to illustrate a loop with the condition at...
During the first iteration, the value ofiwill be8, while in next it will be9and so on, uptill6, in the last iteration. Doing so, one can easily use these individual list element values inside the loop, as in our case, we have printed them. 在第一次迭代期间,i的值为8,而在下一个...
Python While 9 Explanation: First, we import random so we can use some random numbers in our program. On lines 3 through 7, we set up our grid. On line 8, we randomly place the ship. Starting on line 10, we make a function to validate the user’s input. It takes a message as ...
While Loop 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"...
If you were to make this mistake on your system, you would have to interrupt the Python program by pressing the Control + C keys. Example In the below example, you will create the variableoffsetwith an initial value of8. Then you will write awhileloop that keeps running as long as the...
When to use for Loop Anytime you have need to repeat a block of code a fixed amount of times. If you do not know the number of times it must be repeated, use a “while loop” statement instead. For loop Python Syntax foritarator_variableinsequence_name:Statements...Statements ...
# Simple pygame program # Import and initialize the pygame libraryimportpygame pygame.init()# Set up the drawing window screen=pygame.display.set_mode([500,500])# Run until the user asks to quit running=Truewhilerunning:# Did the user click the window close button?foreventinpygame.event.get...
To break out of a for or while loop without a flag. for element in search: if element == target: print("I found it!") break else: print("I didn't find it!") while i < len(search): element = search[i] if element == target: ...