Please use Python for this problem. 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 for this function: # 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 >>> v.set(13.2) >>> v Volume(11) >>> v.set(-1.2) >>> v Volume(0) # __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) # 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) >>> # more thorough checks of clamping >>> v = Volume() >>> [ (val*.5,v.set(val*.5),str(v)) for val in range(-3,30,4)] # set [(-1.5, None, 'Volume(0)'), (0.5, None, 'Volume(0.5)'), (2.5, None, 'Volume(2.5)'), (4.5, None, 'Volume(4.5)'), (6.5, None, 'Volume(6.5)'), (8.5, None, 'Volume(8.5)'), (10.5, None, 'Volume(10.5)'), (12.5, None, 'Volume(11)'), (14.5, None, 'Volume(11)')] >>> [ (val*.5,Volume(val*.5)) for val in range(-3,30,4)] # constructor [(-1.5, Volume(0)), (0.5, Volume(0.5)), (2.5, Volume(2.5)), (4.5, Volume(4.5)), (6.5, Volume(6.5)), (8.5, Volume(8.5)), (10.5, Volume(10.5)), (12.5, Volume(11)), (14.5, Volume(11))] >>> v = Volume(5) >>> [ (v.up(.75), str(v)) for i in range(10) ] # up [(None, 'Volume(5.75)'), (None, 'Volume(6.5)'), (None, 'Volume(7.25)'), (None, 'Volume(8.0)'), (None, 'Volume(8.75)'), (None, 'Volume(9.5)'), (None, 'Volume(10.25)'), (None, 'Volume(11.0)'), (None, 'Volume(11)'), (None, 'Volume(11)')] >>> v = Volume(5) >>> [ (v.down(.75), str(v)) for i in range(10) ] # down [(None, 'Volume(4.25)'), (None, 'Volume(3.5)'), (None, 'Volume(2.75)'), (None, 'Volume(2.0)'), (None, 'Volume(1.25)'), (None, 'Volume(0.5)'), (None, 'Volume(0)'), (None, 'Volume(0)'), (None, 'Volume(0)'), (None, 'Volume(0)')] >>>

Please use Python for this problem. 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 for this function: # 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 >>> v.set(13.2) >>> v Volume(11) >>> v.set(-1.2) >>> v Volume(0) # 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) # 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) >>> # more thorough checks of clamping >>> v = Volume() >>> [ (val.5,v.set(val.5),str(v)) for val in range(-3,30,4)] # set [(-1.5, None, 'Volume(0)'), (0.5, None, 'Volume(0.5)'), (2.5, None, 'Volume(2.5)'), (4.5, None, 'Volume(4.5)'), (6.5, None, 'Volume(6.5)'), (8.5, None, 'Volume(8.5)'), (10.5, None, 'Volume(10.5)'), (12.5, None, 'Volume(11)'), (14.5, None, 'Volume(11)')] >>> [ (val.5,Volume(val.5)) for val in range(-3,30,4)] # constructor [(-1.5, Volume(0)), (0.5, Volume(0.5)), (2.5, Volume(2.5)), (4.5, Volume(4.5)), (6.5, Volume(6.5)), (8.5, Volume(8.5)), (10.5, Volume(10.5)), (12.5, Volume(11)), (14.5, Volume(11))] >>> v = Volume(5) >>> [ (v.up(.75), str(v)) for i in range(10) ] # up [(None, 'Volume(5.75)'), (None, 'Volume(6.5)'), (None, 'Volume(7.25)'), (None, 'Volume(8.0)'), (None, 'Volume(8.75)'), (None, 'Volume(9.5)'), (None, 'Volume(10.25)'), (None, 'Volume(11.0)'), (None, 'Volume(11)'), (None, 'Volume(11)')] >>> v = Volume(5) >>> [ (v.down(.75), str(v)) for i in range(10) ] # down [(None, 'Volume(4.25)'), (None, 'Volume(3.5)'), (None, 'Volume(2.75)'), (None, 'Volume(2.0)'), (None, 'Volume(1.25)'), (None, 'Volume(0.5)'), (None, 'Volume(0)'), (None, 'Volume(0)'), (None, 'Volume(0)'), (None, 'Volume(0)')] >>>

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

Please use Python for this problem.

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 for this function:

# 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

>>> v.set(13.2)
>>> v
Volume(11)

>>> v.set(-1.2)
>>> v
Volume(0)

# __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)

# 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)
>>>

# more thorough checks of clamping

>>> v = Volume()
>>> [ (val*.5,v.set(val*.5),str(v)) for val in range(-3,30,4)] # set
[(-1.5, None, 'Volume(0)'), (0.5, None, 'Volume(0.5)'), (2.5, None, 'Volume(2.5)'), (4.5, None, 'Volume(4.5)'), (6.5, None, 'Volume(6.5)'), (8.5, None, 'Volume(8.5)'), (10.5, None, 'Volume(10.5)'), (12.5, None, 'Volume(11)'), (14.5, None, 'Volume(11)')]
>>> [ (val*.5,Volume(val*.5)) for val in range(-3,30,4)] # constructor
[(-1.5, Volume(0)), (0.5, Volume(0.5)), (2.5, Volume(2.5)), (4.5, Volume(4.5)), (6.5, Volume(6.5)), (8.5, Volume(8.5)), (10.5, Volume(10.5)), (12.5, Volume(11)), (14.5, Volume(11))]
>>> v = Volume(5)
>>> [ (v.up(.75), str(v)) for i in range(10) ] # up
[(None, 'Volume(5.75)'), (None, 'Volume(6.5)'), (None, 'Volume(7.25)'), (None, 'Volume(8.0)'), (None, 'Volume(8.75)'), (None, 'Volume(9.5)'), (None, 'Volume(10.25)'), (None, 'Volume(11.0)'), (None, 'Volume(11)'), (None, 'Volume(11)')]
>>> v = Volume(5)
>>> [ (v.down(.75), str(v)) for i in range(10) ] # down
[(None, 'Volume(4.25)'), (None, 'Volume(3.5)'), (None, 'Volume(2.75)'), (None, 'Volume(2.0)'), (None, 'Volume(1.25)'), (None, 'Volume(0.5)'), (None, 'Volume(0)'), (None, 'Volume(0)'), (None, 'Volume(0)'), (None, 'Volume(0)')]
>>>

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