Python Programming: An Introduction to Computer Science, 3rd Ed.
Python Programming: An Introduction to Computer Science, 3rd Ed.
3rd Edition
ISBN: 9781590282755
Author: John Zelle
Publisher: Franklin, Beedle & Associates
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Chapter 9, Problem 14PE
Program Plan Intro

Program to displays a line to trace the walk

Program plan:

  • Import the required packages
  • In the “main()” function,
    • Generate a prompt to take the user input.
    • Create the object of “GraphWin()”.
    • Set the coordinates by calling the function “setCoords()”
    • A loop is initialized for “i” to be less than 5.
      • Call the function named “randWalk()”.
  • The function named “randWalk()” is defined and inside it,
    • Create the object of “Point()”.
    • Initialize a loop to get the x and y coordinates.
      • Store the x-coordinate value derived in x variable.
      • Store the y-coordinate value derived in y variable.
      • Call the function named “simOneStep()”.
      • Draw the line with the use of function “draw()”.
      • Create the object of “Line()”.
      • Draw the line with the use of function “draw()”.
      • Assign the value of “point1” to “point2”.
  • The function named “simOneStep()” is defined and inside it,
    • Calculate the angle between two axis and store in variable “angle”.
    • Calculate the position of x axis.
    • Calculate the position of y axis.
    • Create the object of “Point()”.
    • Return the value stored in variable “point”.
  • This code executes the main directly.

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