updated part05

Author: kattat13

part05/26_student_database.py

@@ -0,0 +1,68 @@
+def add_student(database: dict, name: str):
+    database[name] = {}
+
+
+def add_course(database: dict, name: str, course: tuple):
+    # ignore courses with grade 0
+    if course[1] == 0:
+        return
+    # check if course is repeated
+    elif course[0] in database[name]:
+        if database[name][course[0]] < course[1]:
+            database[name][course[0]] = course[1]
+    # new course
+    else: 
+        new_dict = {}
+        new_dict[course[0]] = course[1]
+        database[name].update(new_dict)
+
+
+def calc_avg_grade(grades: list) -> float:
+    return sum(grades) / len(grades)
+
+
+def print_student(database: dict, name: str):
+    if name in database:
+        print(f'{name}:')
+        if database[name]:
+            grades = []
+            print(f' {len(database[name])} completed courses:')
+            for key, value in database[name].items():
+                print(f'  {key} {value}')
+                grades.append(value)
+            print(f' average grade {calc_avg_grade(grades)}')
+        else:             
+            print(f' no completed courses')
+    else:
+            print(f'{name}: no such person in the database')
+
+
+def summary(database: dict):
+    most_courses = 0
+    most_courses_name = ''
+    best_avg = 0
+    best_avg_name = ''
+    for student, courses_data in database.items():
+        if len(courses_data) > most_courses:
+            most_courses = len(courses_data)
+            most_courses_name = student
+        avg_grade = calc_avg_grade(courses_data.values())
+        if avg_grade > best_avg:
+            best_avg = avg_grade
+            best_avg_name = student
+            
+    print(f'students {len(database)}')
+    print(f'most courses completed {most_courses} {most_courses_name}')
+    print(f'best average grade {best_avg} {best_avg_name}')
+    
+
+if __name__ == '__main__':
+    students = {}
+    add_student(students, "Peter")
+    add_student(students, "Eliza")
+    add_course(students, "Peter", ("Data Structures and Algorithms", 1))
+    add_course(students, "Peter", ("Introduction to Programming", 1))
+    add_course(students, "Peter", ("Advanced Course in Programming", 1))
+    add_course(students, "Eliza", ("Introduction to Programming", 5))
+    add_course(students, "Eliza", ("Introduction to Computer Science", 4))
+    summary(students)