Question

Can someone please help implement code for the following Python example!

44 This represents an entire grouping of Grade values as a list (named grades). as We can then dig through this list for interesting things and calculations by 46 calling the methods we're going to implement, 47 aB class G Define the GradeBook class, se def init (self): GradeBook constructor, create the only instance variable, S1 a list named grades, and initialize it to an empty list, This means that we S2 can only create an empty GradeBook and then add items to it later on, SA def str (self): r urns a human-centric string representation, We'11 ss choose a multi-line representation (slightly unusual) that contains S6 "GradeBook on the first line and then each successive line is a tab, the S7 str of the next Grade in self, grades, and then a SB each time. This means that the last character of the string is guaranteed to S9 be (regardless of if we have zero or many Grade values). 61 def repr (self): We will be and tell this tn 1 tt t nnnnnrui lazy

Answer 1

Answer #class definition class GradeBook: #con structor def init self): self.g-[] #re turn the human centric string representation def str (self): a "GradeBook: n" for n in self.g: for b in n: a + str (b) +"\t" a "n" return a #display the same thing of str deirepr Seli): return str (self) #append the argument def add grade (seli, grade): self.g.append (grade) #ave raged together of stored grade def average by kind (self, kind): for n in self.g: for b in n: if b.kind -kind: S b

b+= 1 if not b==0: return s/b else: return None #create and return the list of refernce def get all of (self, kind): all of = [] for n in self.g: for b in n: if b.kind -- kind: all of. append (b) #search through grade in ord dei get by name (selLi, name): for list in self.g: if list name: return list[0] return None

Editable code:

#class definition

class GradeBook:

    #constructor

     def __init__(self):

         self.g = []

        

     #return the human centric string representation    

     def __str__(self):

         a = ""

         a += "GradeBook:\n"

         for n in self.g:

             for b in n:

                 a += str(b)+"\t"

             a += "\n"

         return a

        

     #display the same thing of str

     def __repr__(self):

         return str(self)

        

     #append the argument

     def add_grade(self, grade):

         self.g.append(grade)

     #averaged together of stored grade

     def average_by_kind(self, kind):

         s = 0

         b = 0

         for n in self.g:

             for b in n:

                 if b.kind == kind:

                     s += b

                     b += 1

         if not b==0:

             return s/b

         else:

             return None

            

     #create and return the list of refernce

     def get_all_of(self, kind):

         all_of = []

         for n in self.g:

             for b in n:

                 if b.kind == kind:

                     all_of.append(b)

                    

     #search through grade in order

     def get_by_name(self, name):

         for list in self.g:

             if list == name:

                return list[0]

         return None