While Loop in Python to Read a File
Introduction to Practice While Loop in Python
The Exercise While Loop conditional argument is used for an get out level control period of code implementation that ensures the code block is executed at to the lowest degree in one case before the command reaches the while condition. In Python, in that location is no dedicated practice while conditional loop statement, so this part is achieved by creating a logical lawmaking from the while loop, if statement, suspension and continue conditional statements. When the logic of the program is done correctly, depending on the requirement provided, the Practice While loop can be imitated perfectly.
Flowchart of Do-While Loop
In virtually of the estimator programming languages, unlike while loops which test the loop condition at the top of the loop, the do-while loop plays a function of control menstruum statement similar to while loop, which executes the block in one case and repeats the execution of block based on the condition given in the while loop the end.
Syntax of exercise-while
do
{
Statement(south)
} while (condition);
In this syntax, the status appears at the end of the loop, so the statements in the loop execute at to the lowest degree once earlier the condition is checked. In a while loop, we check information technology at the starting time of the loop. If the status is truthful it jumps to practise, and the statements in the loop are over again executed. This is repeated until the condition is simulated. While loop in python has the syntax of the course:
Syntax of while
while expression:
statement (s)
The above statements can exist a single argument or cake of statements. The expression is a condition, and if the status is truthful, then information technology is whatever non-truthful value.
We are used to doing while loops in all basic languages, and we want it in python. The exercise-while loop is important because it executes at least one time earlier the condition is checked. Though python cannot do it explicitly, we can exercise it in the post-obit way.
Syntax while if
while True:
# argument (s)
If not condition:
suspension;
In python, while loop repeatedly executes the statements in the loop if the condition is true. In a while loop, the test condition is checked first, and if it is true, then the block of statements within the loop is executed. After 1 iteration, once again, the test condition is checked, and this process is continued until the test status evaluates to simulated. The do-while loop which is non in python information technology can exist done by the above syntax using while loop with break/if /continue statements. In this, if the condition is truthful, so while statements are executed, if not true, another condition is checked past if loop and the statements in it are executed. The break statement is used to bring the program command out of the if loop. In other words, the suspension is used to abort the electric current execution of the program.
Case
i = one
while True:
impress(i)
i = i + 1
if(i > 5):
break
Output:
In the above example, we can see; showtime, the argument i=1 is initialized, and and then we are checking information technology with a while loop. If the value of the i =1, then we are printing the current value of i. Then the current I value is added with i to get the new value of i. This cake is repeated till the I value reaches to 5 equally this condition (i > v) is checked in the if loop, and this loop stops after i =5 as in that location is a intermission argument, which if loop stops.
In the python body of the while, the loop is adamant through indentation. As there is no proper indentation for specifying do while loop in python, therefore there is no practise-while loop in python, just it is done with while loop itself. The body of the while loop starts with indentation, and as soon as the unindented line is institute, so that is marked as the end of the loop.
Conclusion – Do While Loop in Python
As we are very used to do while loop in all other languages, it will showtime execute statements and then cheque for the atmospheric condition. In python, nosotros besides desire information technology to exist done, merely it cannot as it will not fit the indentation pattern of the python other statements. So in Python, it tin be done with a while argument using the interruption/continue/if statements if the while status is non satisfied, which is like to do while loop as in other languages. The while loop in python commencement checks for condition, and so the cake is executed if the condition is truthful. The block is executed repeatedly until the condition is evaluated to false. Thus, in python, nosotros can apply a while loop with if/break/continue statements that are indented, simply if we use practice-while, information technology does not fit the indentation rule. Therefore we cannot use the exercise-while loop in python.
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This is a guide to Practice while loop in python. Here we discuss the flowchart of Do While Loop in Python with the syntax and example. Yous may also await at the following commodity to acquire more-
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