Python Floats and Objects
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Questions and Answers

What is true about floats in Python?

  • They are primitive data types and not objects
  • They are objects and have state and functionality (correct)
  • They are immutable and cannot be changed
  • They can only be used for integer arithmetic

    • How do you access an object's attributes in Python?

  • Using the assignment operator
  • Using parentheses
  • Using square brackets
  • Using dot notation (correct)

    • What is an immutable object in Python?

  • An object that can be changed after creation
  • An object that can only be used once
  • An object that cannot be changed after creation (correct)
  • An object that can be used for any data type

    • What is the purpose of assigning a label to an object in Python?

    <p>To remind us what the object is used for</p> Signup and view all the answers

    What is the assignment operator in Python?

    <p>A symbol for assigning a label to an object</p> Signup and view all the answers

    What is a variable in Python?

    <p>A label referencing an object in memory</p> Signup and view all the answers

    What is a key characteristic of Python entities?

    <p>They have state and methods</p> Signup and view all the answers

    What is an example of a real-world thing that might be represented by a Python entity?

    <p>A brand of car</p> Signup and view all the answers

    What is an example of functionality that an integer object has in Python?

    <p>All of the above</p> Signup and view all the answers

    What is the result of the expression (10).__add__(100) in Python?

    <p>110</p> Signup and view all the answers

    What is a key difference between Python entities and simple variables?

    <p>Entities can have methods</p> Signup and view all the answers

    What happens to the object an identifier references when the identifier is reassigned?

    <p>The identifier now references a new object</p> Signup and view all the answers

    What is the order of operations when assigning a value to an identifier?

    <p>RHS is evaluated, then LHS</p> Signup and view all the answers

    What is the naming convention for standard variables in Python?

    <p>Snake case</p> Signup and view all the answers

    What happens when we append an element to a list?

    <p>The list's state changes, but it's still the same object</p> Signup and view all the answers

    What is a characteristic of identifiers in Python?

    <p>They are case-sensitive</p> Signup and view all the answers

    What is a consequence of reassigning a variable?

    <p>The variable now references a new object</p> Signup and view all the answers

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