When the break statement gets executed, it terminates its loop completely and control reaches to the statement immediately following the loop. How is break statement different from continue? Purposefully created endless loops that have a break statement within their body to terminate the loop.Logical errors when the programmer misses updating the value of loop control variable.Such loops can occur primarily due to two reasons: What are endless loops ? Why do such loops occur?Ī loop which continues iterating indefinitely and never stops is termed as an endless or infinite loop. In such cases, to make the program more readable and maintainable, named conditions can be used. Sometimes the conditions being used in the code are complex and repetitive. How and when are named conditions useful? Python provides the below jump statements: Jump statements are used to unconditionally transfer program control to other parts within a program. The else clause of a loop does not get executed if the loop is terminated due to the execution of a break statement inside the loop. In which cases, the else clause of a loop does not get executed? The else clause of a loop is executed when the loop is terminating normally i.e., when its test condition has become false for a while loop or when the for loop has executed for the last value in sequence. The else clause of an if-else statement is executed when the condition of the if statement results into false. What is the difference between else clause of if-else and else clause of Python loops? Update Expressions - It updates the value of loop control variable and it is given inside the while loop.The Body of the Loop - It is the set of statements that are executed repeatedly in loop.Test Expression - If its truth value is true then the loop-body gets executed otherwise not.Initialization Expressions - It initializes the loop control variable and it is given outside the while loop before the beginning of the loop. ![]() The four elements of a while loop in Python are: What are the four elements of a while loop in Python? Only if the condition is true, the program control enters the body of the loop. ![]() Its syntax is:Īn entry-controlled loop checks the condition at the time of entry. In Python, an empty statement is pass statement. What is empty statement in Python? What is its need?
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