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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?

    <p>To initialize the class instance</p> Signup and view all the answers

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

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

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

    <p>To handle exceptions and errors</p> Signup and view all the answers

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

    <p>To prevent stack overflow and ensure termination</p> Signup and view all the answers

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

    <p>The worst-case time complexity of an algorithm</p> Signup and view all the answers

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

    <p>The function's ability to call itself</p> Signup and view all the answers

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

    <p>To determine the number of dimensions and size of the array</p> Signup and view all the answers

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

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

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