CMPT 120 Lecture 6: Week 6 Notes (Oct,14,16)

• School: Simon Fraser University
• Department: Computing Science
• Course: CMPT 120
• Professor: Diana Cukierman

Document Summary

To access individual characters in a string we use an index operator in a for loop. Ex. fruit = apple for idx in range(5): current_char = fruit[idx] print(current_char) A will be printed first since the index is 0. Then the next index will be printed which is p . Every window contains a canvas, which is the area inside the window on which we can draw. The method invocation alex. color( red ) will make alex red and the line that it draws will be red too. The color of the turtle, the width of its pen(tail), the position of the turtle within the window, which way it is facing, and so on are all part of its current state. The wn variable refers to the window shown above. When we invoke its exitonclick() method, the program pauses execution and waits for the user to click the mouse somewhere in the window.