Purpose: Modify a class to make it easier to use with overloading.

Open the notebook RoboWorld.ipynb. Save a copy in your Drive and call it Roboworld overload.ipynb.

Add a new

method that returns a string for use with Python's built$-$in print function. Hint:

it may look very similar to print$\_$state

Rewrite the test code in the second code block to use print instead of the instance method

Run both your class and test code blocks.

Further hint: You should write an

method that returns a string. Then, you can simply say

For an example, see the Time Class notebook, or Section $17\mathrm{.}6$ in Think Python $2$e

Turn in: Use File $$ Download $.$ipynb to download RoboWorld Overload.ipynb for upload to

Gradescope below, comprising the answer of Problem A$\mathrm{.}2.$ Make sure the output from your test

block is present, else re$-$run before saving.

The file:

# Robot Class

# $($c$)$ Michael S$.$ Branicky, $2020-10-28,2021-04-08$

class Robot:

# Attributes $($of each Robot instance$)$: x$,$ y$,$ dir

# y N

# $^^$

# $|$ W E

# $+-->$ x v

# S

# Class attributes$/$variables

NORTH $=0$

EAST $=1$

SOUTH $=2$

WEST $=3$

def $\_\_$init$\_\_($self$)$:

self.x $=0$

self.y $=0$

self.dir $=$ Robot.NORTH

def rotate$\_$right$($self$)$:

self.dir $=($self$.$dir $+1)\%4$

def rotate$\_$left$($self$)$:

self.dir $=$ self.dir $-1$

if self.dir $<mtext></mtext><mn>0</mn>$:

self.dir $=3$

def forward$($self$)$:

if self.dir $==$ Robot.NORTH:

self.y $+=1$

elif self.dir $==$ Robot.SOUTH:

self.y $-=1$

elif self.dir $==$ Robot.EAST:

self.x $+=1$

elif self.dir $==$ Robot.WEST:

self.x $-=1$

def print$\_$state$($self$)$:

print$\_$string $=$ f$"$Robot at $(\{$self$.$x$\},\{$self$.$y$\})"$

if self.dir $==$ Robot.NORTH:

dir$\_$symbol $="^"$

elif self.dir $==$ Robot.SOUTH:

dir$\_$symbol $="$v$"$

elif self.dir $==$ Robot.EAST:

dir$\_$symbol $=">"$

elif self.dir $==$ Robot.WEST:

dir$\_$symbol $="<mi>"</mi>$

print$\_$string $+=$ dir$\_$symbol

print$($print$\_$string$)$

# ALTERNATE $1$:

# dir$\_$symbols $="^>$v$<mi>"</mi>$

# dir$\_$symbol $=$ dir$\_$symbols$[$self$.$dir$]$

# ALTERNATE $2$:

# dir$\_$symbols $=\{$Robot$.$NORTH: $"^",$ Robot.SOUTH: $"$v$",$ Robot.EAST: $">",$ Robot.WEST: $"<mi>"</mi><mi>\}</mi>$

# dir$\_$symbol $=$ dir$\_$symbols$[$self$.$dir$]$