Python Turtle Graphics Chapter 3 Flashcards

Key Terms and Definitions in Python Turtle Graphics

• Attribute: Represents a specific state or value belonging to an object, such as color in the case of a turtle (e.g., tess has a color).

• Canvas: The area within a window designated for drawing, where graphical operations occur.

• Control Flow: Refers to the order in which individual statements, instructions, or function calls are executed in a program.

• For Loop: A control flow statement that enables repeated execution of code blocks efficiently.

• Instance: An individual object created from a class, exemplified by different turtles like tess and alex originating from the Turtle class.

• Invoke: The action of activating an object's method by adding parentheses after the method name, for instance, calling wn.exitonclick() activates the exitonclick method.

• Iteration: The process of repeating steps in algorithms, commonly referred to as looping, serving as a foundational component in programming.

• Loop Body: The group of statements that reside inside a loop, indicated by indentation, which constitutes the actions taken during each iteration.

• Loop Variable: A variable that takes on different values during each iteration of a for loop, playing a role in the terminating condition of the loop.

• Method: A function associated with an object that produces a response upon activation. For example, tess.forward(100) utilizes the forward method.

• Module: A separate file containing Python code (definitions and statements) that is importable into other programs, allowing for code reuse and organization.

• Object: A fundamental element in programming which a variable can reference, such as a turtle or a screen window.

• Range: A built-in Python function for creating sequences of integers, particularly beneficial in executing a set number of iterations in for loops.

• Sequential: The standard method of executing a program, where instructions are processed one after the other consistently.

• State: The combined set of attribute values that a specific object holds at any point in time.

• Terminating Condition: The specific criterion that determines when a loop should cease its repetitions. In for loops, this is often linked to the exhaustion of available elements for the loop variable.

• Turtle: A specialized data object utilized in creating graphical representations, commonly known as turtle graphics, allowing for visual drawing through programmable commands.