Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN: 9780133594140
Author: James Kurose, Keith Ross
Publisher: PEARSON
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Use Python for this question:

  1. Develop a class Volume that stores the volume for a stereo that has a value between 0 and 11. Usage of the class is listed below the problem descriptions.  Throughout the class you must guarantee that:

    • The numeric value of the Volume is set to a number between 0 and 11. Any attempt to set the value to greater than 11 will set it to 11 instead, any attempt to set a negative value will instead set it to 0.
    • This applies to the following methods below: __init__, set, up, down

You must write the following methods:

  • __init__ - constructor. Construct a Volume that is set to a given numeric value, or, if no number given, defaults the value to 0.   (Subject to 0 <= vol <=11 constraint above.)
  • __repr__ - converts Volume to a str for display, see runs below.
  • set – sets the volume to the specified argument (Subject to 0 <= vol <=11 constraint above.)
  • get – returns the numeric value of the Volume
  • up – given a numeric amount, increases the Volume by that amount. (Subject to 0 <= vol <=11 constraint above.)
  • down – given a numeric amount, decreases the Volume by that amount. (Subject to 0 <= vol <=11 constraint above.)
  • __eq__ - implements the operator ==.   Returns True if the two Volumes have the same value and False

Output is in the 2 attached images for this question:

 

Please run a doctest so the function returns the following output, which is attached in an image

 

# default arguments for init
-
-
>>> v = volume () # Volume defaults to 0
>>> v
Volume (0)
# can compare Volumes using
==
>>> # comparisons
>>> v = Volume (5)
>>> v.up (1.1)
>>> v == Volume (6.1)
True
>>> Volume (3.1)
== Volume (3.2)
False
# constructor cannot set the Volume greater
# than 11 or less than 0
>>> v = volume (20)
>>> v
Volume (11)
>>> v = Volume (-1)
>>> v
Volume (0)
>>>
expand button
Transcribed Image Text:# default arguments for init - - >>> v = volume () # Volume defaults to 0 >>> v Volume (0) # can compare Volumes using == >>> # comparisons >>> v = Volume (5) >>> v.up (1.1) >>> v == Volume (6.1) True >>> Volume (3.1) == Volume (3.2) False # constructor cannot set the Volume greater # than 11 or less than 0 >>> v = volume (20) >>> v Volume (11) >>> v = Volume (-1) >>> v Volume (0) >>>
##### Volume #####
# set and get
>>> v = volume ()
>>> v.set (5.3)
>>> v
Volume (5.3)
>>> v.get ()
5.3
>>> v.get () ==5.3 # return not print
True
>>>
init_,
_repr_, up, down
>>> v = volume (4.5) # set Volume with value
>>> v
Volume (4.5)
>>> v.up (1.4)
>>> v
Volume (5.9)
>>> v.up (6) # should max out at 11
>>> v
Volume (11)
>>> v.down (3.5)
>>> v
Volume (7.5)
>>> v.down (10) # minimum must be 0
>>> v
Volume (0)
expand button
Transcribed Image Text:##### Volume ##### # set and get >>> v = volume () >>> v.set (5.3) >>> v Volume (5.3) >>> v.get () 5.3 >>> v.get () ==5.3 # return not print True >>> init_, _repr_, up, down >>> v = volume (4.5) # set Volume with value >>> v Volume (4.5) >>> v.up (1.4) >>> v Volume (5.9) >>> v.up (6) # should max out at 11 >>> v Volume (11) >>> v.down (3.5) >>> v Volume (7.5) >>> v.down (10) # minimum must be 0 >>> v Volume (0)
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