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Python Programming Concepts and Applications Quiz

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#1

What does the 'print' function do in Python?

Displays output on the screen
Explanation

Outputs text or variables to the console.

#2

Which of the following is NOT a valid variable name in Python?

1variable
Explanation

Variable names cannot start with a number.

#3

What is the output of the following code?

x = [1, 2, 3]
print(x.pop())

2
Explanation

Removes and returns the last item in the list.

#4

Which of the following is used to handle exceptions in Python?

try-except
Explanation

Catches and handles exceptions.

#5

What is the output of the following code?

x = 'hello'
print(x[::-1])

olleh
Explanation

Reverses the string.

#6

What is the output of the following code?

x = [1, 2, 3]
print(x.append(4))

None
Explanation

Modifies the list in place and returns None.

#7

What is the output of the following code?

x = 5
y = 2
print(x ** y)

25
Explanation

Prints the result of exponentiation.

#8

What is the purpose of 'pass' statement in Python?

To define an empty code block
Explanation

Acts as a placeholder for future code.

#9

What does the 'self' keyword refer to in Python?

Refers to the current instance of a class
Explanation

Refers to the instance of the class.

#10

What does the 'global' keyword do in Python?

Declares a variable as global within a function
Explanation

Specifies a global variable.

#11

What does the 'enumerate' function do in Python?

Returns an iterator of tuples containing indices and elements
Explanation

Pairs each element with its index.

#12

What is the purpose of the 'finally' block in a try-except statement?

To execute code regardless of whether an exception occurred or not
Explanation

Executes cleanup code.

#13

What does the 'join' method do in Python?

Joins elements of a list into a single string
Explanation

Concatenates strings within a list.

#14

What is the purpose of 'lambda' functions in Python?

To create anonymous functions
Explanation

Defines small, unnamed functions.

#15

What does the 'map' function do in Python?

Applies a function to every element in an iterable
Explanation

Applies a function to every item in the iterable.

#16

What is the purpose of the 'yield' keyword in Python?

To return a value from a generator function
Explanation

Generates a value in a generator function.

#17

What is the purpose of the 'staticmethod' decorator in Python?

To define a method that can only be called on the class itself, not on its instances
Explanation

Binds the method to the class rather than an instance.

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