$4$:Unit test

Tests constructor Stringlnstrument$(\text{'}$Guitar$\text{'},$ 'Gibson', $2002,1200,6,19,$ False$)$ sets my$\_$string$\_$instrument.num$\_$strings $=6$

Your test produced

no output.

$5$:Unit test

Tests constructor Stringlnstrument$(\text{'}$Guitar$\text{'},$ 'Gibson', $2002,1200,6,22,$ False$)$ sets my$\_$string$\_$instrument.num$\_$frets $=22$

Your test produced

no output.

$6$:Unit test

Tests constructor StringInstrument$(\text{'}$Viola$\text{'},$ 'Yamaha', $2012,1200,4,0,$ True$)$ sets my$\_$string$\_$instrument.is$\_$bowed $=$ True

Your test produced

no output$\mathrm{.}1$

$3$

$.$

$7$

$$LAB: Instrument information

$($

derived classes

$)$

Given the base class Instrument, define a derived class StringInstrument 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

$2$

$0$

$1$

$5$

$2$

$5$

$0$

$0$

Guitar

Gibson

$2$

$0$

$0$

$2$

$1$

$2$

$0$

$0$

$6$

$1$

$9$

False

the output is:

Instrument Information:

$$ Name: Drums

$$ Manufacturer: Zildjian

$$ Year built:

$2$

$0$

$1$

$5$

$$ Cost:

$2$

$5$

$0$

$0$

Instrument Information:

$$ Name: Guitar

$$ Manufacturer: Gibson

$$ Year built:

$2$

$0$

$0$

$2$

$$ Cost:

$1$

$2$

$0$

$0$

$$ Number of strings:

$6$

$$ Number of frets:

$1$

$9$

$$ Is bowed: False

Here is my code and the error that I am recieving: class Instrument:

def $\_\_$init$\_\_($self$,$ name, manufacturer, year$\_$built, cost$)$:

self.name $=$ name

self.manufacturer $=$ manufacturer

self.year$\_$built $=$ year$\_$built

self.cost $=$ cost

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

print$($f$"$Instrument Information:"$)$

print$($f$"$Name: $\{$self$.$name$\}")$

print$($f$"$Manufacturer: $\{$self$.$manufacturer$\}")$

print$($f$"$Year built: $\{$self$.$year$\_$built$\}")$

print$($f$"$Cost: $\{$self$.$cost$\}")$

class StringInstrument$($Instrument$)$:

def $\_\_$init$\_\_($self$,$ name, manufacturer, year$\_$built, cost, num$\_$strings, num$\_$frets, is$\_$bowed$)$:

super$().\_\_$init$\_\_($name$,$ manufacturer, year$\_$built, cost$)$

self.num$\_$strings $=$ num$\_$strings

self.num$\_$frets $=$ num$\_$frets

self.is$\_$bowed $=$ is$\_$bowed

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

super$().$print$\_$info$()$

print$($f$"$Number of strings: $\{$self$.$num$\_$strings$\}")$

print$($f$"$Number of frets: $\{$self$.$num$\_$frets$\}")$

print$($f$"$Is bowed: $\{$self$.$is$\_$bowed$\}")$

# Read input

instrument$\_$name $=$ input$()$

instrument$\_$manufacturer $=$ input$()$

instrument$\_$year$\_$built $=$ int$($input$())$

instrument$\_$cost $=$ int$($input$())$

string$\_$instrument$\_$name $=$ input$()$

string$\_$instrument$\_$manufacturer $=$ input$()$

string$\_$instrument$\_$year$\_$built $=$ int$($input$())$

string$\_$instrument$\_$cost $=$ int$($input$())$

string$\_$instrument$\_$num$\_$strings $=$ int$($input$())$

string$\_$instrument$\_$num$\_$frets $=$ int$($input$())$

string$\_$instrument$\_$is$\_$bowed $=$ input$()==$ "True"

# Create Instrument object

instrument $=$ Instrument$($instrument$\_$name, instrument$\_$manufacturer, instrument$\_$year$\_$built, instrument$\_$cost$)$

# Create StringInstrument object

string$\_$instrument $=$ StringInstrument$($string$\_$instrument$\_$name, string$\_$instrument$\_$manufacturer, string$\_$instrument$\_$year$\_$built, string$\_$instrument$\_$cost$,$ string$\_$instrument$\_$num$\_$strings, string$\_$instrument$\_$num$\_$frets, string$\_$instrument$\_$is$\_$bowed$)$

# Print information

instrument.print$\_$info$()$

print$()$

string$\_$instrument.print$\_$info$()$