Python While Loops
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21 questions
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- Q1What keyword is used to exit a while loop in Python?returncontinueexitbreak30s
- Q2What does the 'continue' keyword do in a Python while loop?Prints a message to the consoleSkips the rest of the code inside the loop and starts the next iterationEnds the loop and exits the while loopStops the entire program30s
- Q3What is the syntax to start a while loop in Python?while loop:for i in range(5):if condition:do while condition:while condition:30s
- Q4What is the purpose of using a 'while' loop in Python?To repeatedly execute a block of code as long as a certain condition is trueTo print a message to the consoleTo execute a block of code onceTo skip a block of code30s
- Q5How can you prevent an infinite loop in a while loop in Python?Increase the loop counter indefinitelyEnsure that the loop condition eventually becomes falseUse the 'continue' keywordAdd a print statement at the end of the loopDelete the loop code30s
- Q6What is the output of the following Python code snippet?while True: print('Hello, World!') breakNothing is printedHello, World!Infinite loopGoodbye, World!Error30s
- Q7What is the role of the 'else' block in a Python while loop?It is used to initialize loop variablesIt gets executed when the loop terminates normally (without a break statement)It gets executed before the loop startsIt gets executed when a break statement is encounteredIt is where the loop condition is checked30s
- Q8What is an infinite loop in Python?A loop that prints 'Hello, World!' repeatedlyA loop that only runs onceA loop that skips certain iterationsA loop with a large number of iterationsA loop that continues to execute indefinitely30s
- Q9What is the purpose of the 'pass' keyword in a Python while loop?To restart the loop from the beginningTo do nothing and act as a placeholderTo skip the rest of the loop iterationTo print a message to the consoleTo exit the loop immediately30s
- Q10How does a 'while' loop differ from a 'for' loop in Python?A 'while' loop is used when you don't know the number of iterations in advance, while a 'for' loop is used when you know the number of iterationsA 'while' loop is used for mathematical calculations, while a 'for' loop is used for text manipulationA 'while' loop always runs an infinite number of times, while a 'for' loop runs a predefined number of timesA 'while' loop can only iterate over numbers, while a 'for' loop can iterate over stringsA 'while' loop can skip iterations, while a 'for' loop cannot30s
- Q11What keyword is used in Python to create a while loop?doifwhilefor30s
- Q12What is the purpose of the 'break' statement in a while loop in Python?To print the loop variableTo exit the loop prematurelyTo skip the current iteration and move to the next oneTo restart the loop from the beginning30s
- Q13How can you prevent an infinite loop in Python while using a while loop?By ensuring the loop variable is updated inside the loopBy increasing the loop variable by a fixed amount each iterationBy using the 'continue' statement instead of 'break'By changing the loop condition to always evaluate to True30s
- Q14What happens if the condition of a while loop in Python is initially False?The loop body will not be executedThe loop will throw an errorThe loop will run indefinitelyThe loop body will be executed only once30s
- Q15How do you ensure a while loop in Python eventually terminates?By adjusting the loop variable to meet the loop conditionBy using the 'stop' keyword to end the loopBy decreasing the loop variable infinitelyBy adding more code inside the loop30s