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Python Basics: Variables, Data Types, and Conditional Statements

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Python Basics: Variables, Data Types, and Conditional Statements

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Questions and Answers

What is the purpose of the 'self' parameter in a class definition?

To define a class method

To define a class variable

To create a new instance of the class

To reference the instance of the class (correct)

When would you use a 'with' statement in Python?

When working with dictionaries

When working with conditional statements

When working with files (correct)

When working with lists

What is the difference between the 'and' and 'or' operators in Python?

The 'and' operator returns False if both conditions are false, while the 'or' operator returns False if either condition is false

The 'and' operator returns True if either condition is true, while the 'or' operator returns True if both conditions are true

The 'and' operator returns False if either condition is false, while the 'or' operator returns False if both conditions are false

The 'and' operator returns True if both conditions are true, while the 'or' operator returns True if either condition is true (correct)

What is the purpose of the 'init' method in a class definition?

To initialize the class instance Signup and view all the answers

What is the difference between a 'for' loop and a 'while' loop in Python?

A 'for' loop is used for iterating over a sequence, while a 'while' loop is used for iterating indefinitely Signup and view all the answers

What is the purpose of the 'try-except-else-finally' block in Python?

To handle exceptions and errors Signup and view all the answers

What is the primary purpose of defining a base case in a recursive algorithm?

To prevent stack overflow and ensure termination Signup and view all the answers

What does the big O notation primarily represent in algorithm analysis?

The worst-case time complexity of an algorithm Signup and view all the answers

What is the main difference between a recursive and non-recursive function?

The function's ability to call itself Signup and view all the answers

What is the primary purpose of using the shape attribute of an ndarray object?

To determine the number of dimensions and size of the array Signup and view all the answers

What is the main benefit of using a recursive function to solve a problem?

It can be more elegant and easier to understand than an iterative solution Signup and view all the answers