class PersonData:

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

self.last$\_$name $=\text{'}\text{'}$

self.age$\_$years $=0$

def set$\_$name$($self$,$ user$\_$name$)$:

self.last$\_$name $=$ user$\_$name

def set$\_$age$($self$,$ num$\_$years$)$:

self.age$\_$years $=$ num$\_$years

# Other parts omitted

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

output$\_$str $=$ 'Name: $\text{'}+$ self.last$\_$name $+\text{'},$ Age: $\text{'}+$ str$($self$.$age$\_$years$)$

return output$\_$str

class StudentData$($PersonData$)$:

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

PersonData.$\_\_$init$\_\_($self$)$ # Call base class constructor

self.id$\_$num $=0$

def set$\_$id$($self$,$ student$\_$id$)$:

self.id$\_$num $=$ student$\_$id

def get$\_$id$($self$)$:

return self.id$\_$num

course$\_$student $=$ StudentData$()$

$\text{'}\text{'}\text{'}$ Your solution goes here $\text{'}\text{'}\text{'}$

print$(\text{'}\{\},$ ID: $\{\}\text{'}.$format$($course$\_$student.print$\_$all$(),$ course$\_$student.get$\_$id$()))$