1 Below we have defined the classes Professor and Student, implementing some of what was described above.Remember that we pass the self argument implicitly to instance methods when using dot-notation.class Student:students = 0 # this is a class attributedef _init__(self, name, staff):self.name = name # this is an instance attributeself.understanding 0Student students += 1print ("There are now", Student.students, "students")staff.add_student (self)def visit_office_hours (self, staff):staff.assist (self)print("Thanks, " + staff.name)class Professor:definit__(self, name):self.name = nameself.students = {}def add_student (self, student):self.students [student.name] = studentdef assist (self, student):>>> Xstudent understanding += 1What will the following lines output?>>> callahan = Professor("Callahan")>>> elle Student("Elle", callahan)>>> elle.visit_office_hours(callahan)>>> elle.visit_office_hours (Professor("Paulette"))>>> elle understanding>>> [name for name in callahan.students]>>> x = Student("Vivian", Professor("Stromwell")).name>>> [name for name in callahan.students]

Code: class Student: students =0 def __init__(self,name,staff): self.name=name…

class Student: students = 0 # this is a class attribute def _init__(self, name, staff): self.name = name # this is an instance attribute self.understanding = 0 Student students += 1 print("There are now", Student.students, "students") staff.add_student (self)

class Student: students = 0 # this is a class attribute def _init__(self, name, staff): self.name = name # this is an instance attribute self.understanding = 0 Student students += 1 print("There are now", Student.students, "students") staff.add_student (self)

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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