1

Labs/Lab-7/lab/Data1401-Grades.csv

@@ -0,0 +1,18 @@
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+1,10,7,10,10,0,10,10,10,10,14,10,6,10,0,0,0,0,0,0,0,0,0,0,0,11,10,10,0,7,0,0,0,0,0,0,0,1,9.5,15,9,9,10,9,5,9,7,9,10,10,10,5,10,5,0
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Labs/Lab-7/lab/base.py

@@ -0,0 +1,20 @@
+import numpy as np
+import math
+
+# Create some virtual classes
+class base:
+    __name=""
+
+    def __init__(self,name):
+        self.__name=name
+
+    def name(self):
+        return self.__name
+
+class data(base):
+    def __init__(self,name):
+        base.__init__(self,name)
+
+class alg(base):
+    def __init__(self,name):
+        base.__init__(self,name)

Labs/Lab-7/lab/calculator.py

@@ -0,0 +1,9 @@
+from base import alg
+
+
+class calculator(alg):
+    def __init__(self,name):
+        alg.__init__(self,name)
+
+    def apply(self,a_grade_book):
+        raise NotImplementedError

Labs/Lab-7/lab/classes.py

@@ -0,0 +1,74 @@
+import base as base
+import numpy as numpy
+from base import data
+
+
+class grade(data):
+    __value=0
+    __numerical=True
+    __gradebook_name=str()
+    __letter_grades=["F-","F","F+","D-","D","D+","C-","C","C+","B-","B","B+","A-","A","A+"]
+
+    def __init__(self,name,numerical=True,value=None):
+        if value:
+            if isinstance(value,(int,float)):
+                self.__numerical=True
+            elif isinstance(value,str):
+                self.__numerical=False
+            self.set(value)
+        else:
+            self.__numerical=numerical
+        self.__gradebook_name=name
+        data.__init__(self,name+" Grade Algorithm")
+
+    def set(self,value):
+        if isinstance(value,(int,float)) and self.__numerical:
+            self.__value=value
+        elif isinstance(value,str) and not self.__numerical:
+            if value in self.__letter_grades:
+                self.__value=value
+        else:
+            print (self.name()+" Error: Bad Grade.")
+            raise Exception
+
+    def value(self):
+        return self.__value
+
+    def numerical(self):
+        return self.__numerical
+
+    def gradebook_name(self):
+        return self.__gradebook_name
+
+    def __str__(self):
+        return self.__gradebook_name+": "+str(self.__value)
+
+class student(data):
+    __id_number=0
+    __grades=dict()
+
+    def __init__(self,first_name, last_name,id_number):
+        self.__id_number=id_number
+        self.__grades=dict()
+        data.__init__(self,first_name+" "+last_name+" Student Data")
+
+    def add_grade(self,a_grade,overwrite=False):
+        if overwrite or not a_grade.gradebook_name() in self.__grades:
+            self.__grades[a_grade.gradebook_name()]=a_grade
+        else:
+            print (self.name()+" Error Adding Grade "+a_grade.name()+". Grade already exists.")
+            raise Exception
+
+    def id_number(self):
+        return self.__id_number
+
+    def __getitem__(self,key):
+        return self.__grades[key]
+
+    def get_grades(self):
+        return dict(self.__grades)
+
+    def print_grades(self):
+        for grade in self.__grades:
+            print (self.__grades[grade])
+

Labs/Lab-7/lab/csv_reader.py

@@ -0,0 +1,24 @@
+def csv_reader(filename):
+    file = open(filename, 'r')
+    columns = None
+    data = []
+    final = []
+
+    for line in file:
+        if columns == None:
+            columns = (line.rstrip('\n').split(','))
+        else:
+            data.append(line.rstrip('\n').split(','))
+
+    for line in range(len(data)):
+        student_grade_dict = dict()
+        for grade in range(len(data[line])):
+            try:
+                float(data[line][grade])
+                student_grade_dict[columns[grade]] = float(data[line][grade])
+            except ValueError:
+                student_grade_dict[columns[grade]] = data[line][grade]
+
+        final.append(student_grade_dict)
+
+    return final

Labs/Lab-7/lab/curved_letter_grade.py

@@ -0,0 +1,68 @@
+from calculator import calculator
+from classes import grade
+
+
+class curved_letter_grade(calculator):
+    __grades_definition = [(.97, "A+"),
+                           (.93, "A"),
+                           (.9, "A-"),
+                           (.87, "B+"),
+                           (.83, "B"),
+                           (.8, "B-"),
+                           (.77, "C+"),
+                           (.73, "C"),
+                           (.7, "C-"),
+                           (.67, "C+"),
+                           (.63, "C"),
+                           (.6, "C-"),
+                           (.57, "F+"),
+                           (.53, "F"),
+                           (0., "F-")]
+
+    def __init__(self):
+        calculator.__init__(self, "Curved Percent Based Grade Calculator")
+
+    def apply(self, **kwargs):
+        gradebook = kwargs["gradebook"]
+
+        grades = []
+
+        students = gradebook.get_students()
+
+        for item in gradebook.getData():
+            itemName = item[:item.find('_')]
+            if itemName not in grades:
+                grades.append(itemName)
+
+
+        for gradeO in grades:
+            for student in students:
+                max_grade = students[student][gradeO + "_n"].value() * 10.
+                std_dev = gradebook[gradeO + "_STD"]
+                mean = gradebook[gradeO + "_Mean"]
+                overall_grade = students[student][gradeO + "_sum"]
+                percent = overall_grade.value() / max_grade
+                shift_to_zero = percent - (mean / max_grade)
+                if shift_to_zero == 0:
+                    scale_std = 0
+                    scaled_percent =  students[student][gradeO + "_sum"].value() / max_grade
+                else:
+                    scale_std = 0.1 * shift_to_zero / (std_dev / max_grade)
+                    scaled_percent = scale_std + 0.8
+                if scaled_percent <= (overall_grade.value() / max_grade):
+                    scaled_percent = (overall_grade.value() / max_grade)
+
+                curved_grade = None
+                for i, v in enumerate(self.__grades_definition):
+                    if scaled_percent >= 1.:
+                        curved_grade = grade(gradeO + "_curved", value=self.__grades_definition[0][1])
+                        break
+                    if (scaled_percent >= v[0]):
+                        break
+
+                curved_grade = grade(gradeO + "_curved", value=self.__grades_definition[i][1])
+
+                students[student].add_grade(curved_grade)
+
+
+

Labs/Lab-7/lab/final_grade_calculator.py

@@ -0,0 +1,102 @@
+import base as base
+import classes as classes
+
+from base import alg
+from classes import grade
+
+class final_grade_calculator(alg):
+    GradeMap = {"A+": 12,
+                "A": 11,
+                "A-": 10,
+                "B+": 9,
+                "B": 8,
+                "B-": 7,
+                "C+": 6,
+                "C": 5,
+                "C-": 4,
+                "D+": 3,
+                "D": 2,
+                "D-": 1,
+                "F": 0}
+
+    GradeMapR = {12: "A+",
+                11: "A",
+                10: "A-",
+                9 : "B+",
+                8 : "B",
+                7 : "B-",
+                6 : "C+",
+                5 : "C",
+                4 : "C-",
+                3 : "D+",
+                2 : "D",
+                1 : "D-",
+                0 : "F"
+                }
+
+    def __init__(self):
+        self.__prefix=''
+        self.__n=0
+        alg.__init__(self, "Final Grade Calculator")
+
+    def apply(self, **kwargs):
+        gradebook = kwargs["gradebook"]
+        numberToDrop = kwargs["numberToDrop"]
+
+        students = gradebook.get_students()
+        print(gradebook)
+        exam = 'e'
+        lab = 'l'
+        quiz = 'q'
+
+        for student in students:
+            examGrades = self.__final_and_drop_grades_for_student_item__(students[student], exam)
+            labGrades = self.__final_and_drop_grades_for_student_item__(students[student], lab)
+            quizGrades = self.__final_and_drop_grades_for_student_item__(students[student], quiz)
+
+            for i in range(numberToDrop):
+                minVal = 99999999
+                min = 0
+                if (len(labGrades) == 0):
+                    break
+                for gradeVal in range(len(labGrades)):
+                    if labGrades[gradeVal] < minVal:
+                        minVal = labGrades[gradeVal]
+                        min = gradeVal
+                labGrades.pop(min)
+
+            examTotal = 0
+            labTotal = 0
+            quizTotal = 0
+            total = 0
+            for eg in examGrades:
+                examTotal += eg * .2
+            for lab in labGrades:
+                labTotal += lab
+            for qz in quizGrades:
+                quizTotal += qz
+            total = (examTotal * .4) + (labTotal * .5) + (quizTotal * .1)
+
+            total /= (len(examGrades) + len(labGrades) + len(quizGrades))
+            total = round(total)
+
+            if (total > 12) :
+                total = 12
+
+            final_grade = grade("FINAL_GRADE", value=self.GradeMapR[total][0])
+
+            students[student].add_grade(final_grade)
+
+
+
+    def __final_and_drop_grades_for_student_item__(self, a_student, item):
+        items = []
+
+        for grade in a_student.get_grades():
+            if grade[0] == item and grade[len(grade) - 1] == 'd':
+                items.append(grade)
+
+        gradesVals = []
+        for item in items:
+            gradesVals.append(self.GradeMap[a_student[item].value()])
+        return gradesVals

Labs/Lab-7/lab/gradebook.py

@@ -0,0 +1,62 @@
+import base as base
+import classes as classes
+
+from base import data
+
+class grade_book(data):
+  # New member class to hold arbitrary data associated with the class
+
+  __data=dict()
+  __students=dict()
+
+  def __init__(self,name):
+      data.__init__(self,name+" Course Grade Book")
+      self.__students=dict()
+      self.__data=dict()
+
+  # New method to access data
+  def __getitem__(self,key):
+      return self.__data[key]
+
+  # New method to add data
+  def __setitem__(self, key, value):
+      self.__data[key] = value
+
+  def add_student(self,a_student):
+      self.__students[a_student.id_number()]=a_student
+
+  def getData(self):
+    return self.__data
+  # New method to allow iterating over students
+  def get_students(self):
+      return self.__students
+
+  def assign_grade(self,key,a_grade):
+      the_student=None
+      try:
+          the_student=self.__students[key]
+      except:
+          for id in self.__students:
+              if key == self.__students[id].name():
+                  the_student=self.__students[id]
+                  break
+      if the_student:
+          the_student.add_grade(a_grade)
+      else:
+          print (self.name()+" Error: Did not find student.")
+
+  def apply_calculator(self,a_calculator,**kwargs):
+    a_calculator.apply(**kwargs)
+
+  def print_grade_calculations(self):
+    grades = [];
+    for item in self.__data:
+        itemName = item[:item.find('_')]
+        if itemName not in grades:
+            grades.append(itemName)
+    print("-----------------------------")
+    print("| Grade \t| Mean \t| STD \t|")
+    print("-----------------------------")
+    for item in grades:
+        print("| "+ item + " \t|\t" + str(round(self.__data[item + "_Mean"],2)) + " \t | \t" + str(round(self.__data[item + "_STD"],2)) + " |")
+    print("-----------------------------")