#1
What does a 'for' loop do in programming?
It performs a specified action multiple times
ExplanationRepeats a block of code for each item in a sequence.
#2
What is the output of the following Python code?
for i in range(5):
print(i)
0 1 2 3 4
ExplanationPrints numbers from 0 to 4, each on a new line.
#3
What is the purpose of an 'if-else' statement in programming?
To perform different actions based on different conditions
ExplanationExecutes one block of code if a condition is true, another if false.
#4
What is the difference between '==' and '!=' in programming?
'==' checks for equality, while '!=' checks for inequality
Explanation'==' tests if two values are equal; '!=' tests if they are not.
#5
What is the output of the following Python code?
x = 5
while x > 0:
print(x)
x -= 1
5 4 3 2 1
ExplanationPrints numbers from 5 to 1 in descending order.
#6
What is the purpose of the 'else' statement in a loop?
To execute a block of code when the loop condition is false
ExplanationExecutes when the loop condition is false.
#7
In programming, what is a 'conditional statement'?
A statement that performs a specific action based on a condition
ExplanationExecutes code based on a specified condition.
#8
What is the purpose of a 'break' statement in a loop?
To exit the loop completely
ExplanationTerminates the loop and moves to the next statement.
#9
What does the 'continue' statement do in a loop?
It skips the remaining code in the loop and proceeds to the next iteration
ExplanationSkips the rest of the code in the loop and continues to the next iteration.
#10
In Python, what does the 'range()' function do?
It generates a sequence of numbers
ExplanationCreates a sequence of numbers according to specified parameters.
#11
What is the purpose of a 'nested loop' in programming?
To create a loop inside another loop
ExplanationPlaces one loop inside another loop.
#12
Which of the following is true about the 'elif' statement in Python?
It is short for 'else if' and is used to check multiple conditions
ExplanationUsed to check additional conditions after the 'if' statement.
#13
What is the difference between 'while' and 'for' loops in programming?
A 'while' loop iterates until a condition is true, whereas a 'for' loop iterates over a sequence of elements
ExplanationWhile loop repeats until a condition is false; for loop iterates over a specified sequence.
#14
What does the 'pass' statement do in Python?
It is a null operation, meaning nothing happens when it executes
ExplanationPlaceholder statement with no effect when executed.
#15
What is an infinite loop in programming?
A loop that never terminates
ExplanationContinues indefinitely without an exit condition.
#16
What is the purpose of a 'generator' in Python?
To generate a sequence of values lazily
ExplanationProduces values on demand, conserving resources.
#17
What does the 'reduce()' function do in Python?
It reduces a list to a single value by applying a function cumulatively
ExplanationApplies a function cumulatively to the items in an iterable.