Python Quiz 1

What is the advantage of using generators compared to lists?

• Generators are faster for large datasets.
• Generators can be modified after creation.
• Generators use less memory.
• Generators use more memory.

What does the try-except block do in Python?

• Defines a loop structure.
• Handles potential errors during code execution
• Checks for specific variable values.
• Creates a conditional statement.

What is the difference between a module and a package in Python?

• Modules contain functions and variables, packages group related modules.
• Packages are executable code, modules are not.
• Modules are for internal use, packages are for external use.
• There's no difference.

How do you open a file for writing in Python?

• open("filename.txt", "r")
• open("filename.txt", "w")
• open("filename.txt", "a") (append mode)
• open("filename.txt") (default read mode)

What are the pillars of Object-Oriented Programming (OOP)?

• Inheritance, Encapsulation, Polymorphism
• Functions, Variables, Loops
• Modules, Packages, Libraries
• Lists, Tuples, Dictionaries

What is the output of the following code? import array as arr MY_array=arr.array('i',[1,2,3,4,5]) MY-array[::-1]

• [5, 4, 3, 2, 1]
• array(‘i’, [5, 4, 3, 2, 1])
• array([5, 4, 3, 2, 1])
• array(‘i’, [1,2,3,4,5])

What is the purpose of a decorator in Python?

• To modify the behavior of a function without changing its code.
• To define a new data type.
• To improve code readability.
• To optimize code performance.

Which of the following is NOT an iterable data type in Python?

• String
• List
• Dictionary(keys)
• Integer

Which of the following statements correctly checks if a key exists in a dictionary?

• if key in dict:
• if dict.has_key(key):
• if dict.is_key(key):
• if dict.contains(key):

What is a pass in Python?

• Pass means performing no operation or in other words
• It is a placeholder in the compound statement
• There should be a blank left and nothing has to be written there.
• All of the above