16.8 LAB: Instrument information (derived classes) Given the base class Instrument, define a derived class String Instrument for string instruments with a constructor that initializes the attributes of the Instrument class as well as new attributes of the following types • integer to store the number of strings • integer to store the number of frets • boolean to store whether the instrument is bowed Ex. If the input is: Drums Zildjian 2015 2500 Guitar Gibson 2002 1200 6 19 False the output is: Instrument Information: Name: Drums Manufacturer: Zildjian Year built: 2015 Cost: 2500 Instrument Information: Name: Guitar Manufacturer: Gibson Year built: 2002 Cost: 1200 Number of strings: 6 Number of frets: 19 Is bowed: False
16.8 LAB: Instrument information (derived classes) Given the base class Instrument, define a derived class String Instrument for string instruments with a constructor that initializes the attributes of the Instrument class as well as new attributes of the following types • integer to store the number of strings • integer to store the number of frets • boolean to store whether the instrument is bowed Ex. If the input is: Drums Zildjian 2015 2500 Guitar Gibson 2002 1200 6 19 False the output is: Instrument Information: Name: Drums Manufacturer: Zildjian Year built: 2015 Cost: 2500 Instrument Information: Name: Guitar Manufacturer: Gibson Year built: 2002 Cost: 1200 Number of strings: 6 Number of frets: 19 Is bowed: False
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Transcribed Image Text:16.8 LAB: Instrument information (derived classes)
Given the base class Instrument, define a derived class String Instrument for string instruments with a constructor that initializes
the attributes of the Instrument class as well as new attributes of the following types
●
●
integer to store the number of strings
integer to store the number of frets
boolean to store whether the instrument is bowed
•
Ex. If the input is:
Drums
Zildjian
2015
2500
Guitar
Gibson
2002
1200
6
19
False
the output is:
Instrument Information:
Name: Drums
Manufacturer: Zildjian
Year built: 2015
Cost: 2500
Instrument Information:
Name: Guitar
Manufacturer: Gibson
Year built: 2002
Cost: 1200
Number of strings: 6
Number of frets: 19
Is bowed: False
Transcribed Image Text:1 class Instrument:
4
3
4
3
1
5
6 class String Instrument (Instrument):
def __init__(self, name, manufacturer, year_built, cost, num_strings, num_frets):
super(). __init__(name, manufacturer, year_built, cost)
3
def __init__(self, name, manufacturer, year_built, cost):
self.name = name
self.manufacturer manufacturer
self.year_built year_built
self.cost = cost
4
def print_info(self):
3 if __name__
4
3
print('Instrument Information: ')
print(' Name:', self.name)
print(' Manufacturer:', self.manufacturer)
print(' Year built:', self.year_built)
print(' Cost:', self.cost)
self.num_strings
self.num_frets
__main__":
=
= num_frets
instrument_name input()
manufacturer_name = input()
year_built =
int(input())
cost = int(input())
string_instrument_name
string_manufacturer
=
input()
3 string_year_built = int(input())
1
=
num_strings
=
my_instrument
my_string_instrument
string_cost int(input())
num_strings int(input())
num_frets = int(input())
=
input()
=
Instrument (instrument_name, manufacturer_name, year_built, cost)
String Instrument(string_instrument_name, string_manufacturer, string_year_built,
num_strings, num_frets)
my_instrument.print_info()
my_string_instrument.print_info()
print(' Number of strings:', my_string_instrument.num_strings)
print(' Number of frets:', my_string_instrument.num_frets)
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