Demo Test Python Loops and Conditions

What is the syntax for a for loop in Python?

• foreach variable in sequence:

• for variable in sequence:

• for (variable; condition; increment)

• for variable in sequence()

What is the function of a for loop in Python?

• To execute code conditionally based on a boolean expression.

• To iterate over a sequence, such as a list or a string.

• To define a class in Python.

• To handle exceptions in Python.

Explain how nested conditional statements work with an example.

• Nested conditional statements can only check one condition at a time.

• Nested conditional statements are not used in programming languages.

• Nested conditional statements execute all conditions regardless of the outer conditions.

• Nested conditional statements allow for checking multiple conditions in a hierarchical manner, executing inner conditions only if the outer conditions are true.

What are loop control statements and name a few?

• if, switch, case

• break, continue, return

• loop, iterate, execute

• for, while, do-while

How do you use a break statement in a loop?

• Use the break statement inside a loop to exit the loop when a specific condition is met.

• Use the break statement to pause the loop temporarily.

• Place the break statement outside the loop for it to work.

• Use the break statement to skip to the next iteration of the loop.

What is a Boolean expression and how is it used in conditions?

• A Boolean expression is a type of variable that stores strings.

• A Boolean expression is a numerical value used for calculations.

• A Boolean expression is a logical statement that evaluates to true or false, used in conditions to control program flow.

• A Boolean expression is a graphical representation of data.

How can you use an else statement with a for loop?

• You can only use an else statement with while loops.

• An else statement cannot be used with loops in Python.

• You can use an else statement with a for loop to execute code after the loop if it did not encounter a break.

• The else statement runs before the for loop completes.

What is the difference between '==' and 'is' in conditional statements?

• '==' checks for object type, while 'is' checks for value type.

• Both '==' and 'is' check for value equality.

• The '==' operator checks for value equality, while 'is' checks for identity.

• '==' is used for assignment, while 'is' is used for comparison.

count = 0

for i in range(5):

if i % 2 == 0:

count += i

print(count)

• 4

• 6

• 8

• 10

What will be the output of the following code snippet:
count = 0
for i in range(3):
count += i
print(count)

• 5

• 0

• 3

• 6