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MyFirstClass
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MyFirstClass
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#Declaring a class
class Student:
#Declaring a class variable
pass_percent = 40.0
num_of_students = 0
def __init__(self, fname, lname, course, marks):
self.fname = fname
self.lname = lname
self.course = course
self.marks = marks
# Every time a new instance is created, the number of students
# counter will increase
Student.num_of_students += 1
# Regular methods
def fullname(self):
return '{} {}'.format(self.fname, self.lname)
def pass_fail(self):
if self.marks >= 40.0:
return 'pass'
else:
return 'fail'
# Class Methods
@classmethod
def calculate_grade(cls, score):
pass
@classmethod
def from_string(cls, stu_str):
fname, lname, course, marks = stu_str.split('-')
return cls(fname, lname, course, marks)
#Inheritance
# Subclass 1 (undergraduate students)
class Undergrad(Student):
pass_percent = 33.0
def __init__(self, fname, lname, course, marks, clubs = None):
super().__init__(fname, lname, course, marks)
if clubs is None:
self.clubs = []
else:
self.clubs = clubs
def add_club(self, club):
if club not in self.clubs:
self.clubs.append(club)
def remove_club(self, club):
if club in self.clubs:
self.clubs.remove(club)
def print_clubs(self):
print(self.clubs)
# Subclass 2 (graduate students)
class Graduate(Student):
pass_percent = 40.0
def __init__(self, fname, lname, course, marks, work_ex):
super().__init__(fname, lname, course, marks)
self.work_ex = work_ex
s1 = Student('Sid','Goel','Data Science', 90)
s2 = Student('S1','G1','Data Science', 25)
stu_str1 = 'Iron-Man-CS-100'
stu_str2 = 'Black-Widow-MEAM-78'
stu_str3 = 'Jumbo-Hulk-SCMP-98'
new_stu1 = Student.from_string(stu_str1)
ug1 = Undergrad('Sid','Goel','Data Science', 90, ['Debating'])
print(ug1.clubs)
print(s1)
print(s2)
s1.fullname()
#another way to write function call
Student.fullname(s1)
#print all the instance variables
print(s1.__dict__)
print(new_stu1.fname)
print(new_stu1.lname)
#isinstance()
print(isinstance(ug1, Undergrad))
#issubclass()
print(issubclass(Graduate, Student))