Hello, First, thank you for providing this GREAT service, & THANKS to
everyone who contributes. It's greatly appreciated. . .I'm new to Python
(2.7, Win XP) & new to programming in general. I have been studying on
my own for about a month now. I believe I have a good grasp of the basics.
Secondly, I have several questions about this piece of code from 'A Byte
Of Python' by Swaroop. Hope that's ok to use this code. I guess I could
try to write a new ex. on my own, but, figured it would be too confusing.
My question is regarding the tell methods in the subclasses,the code
{SchoolMember.tell(self)}, in the class Teacher & Student. I just don't
understand what this is doing? Calling the first method {def tell} from
the parent class, I assume? There is already a print statement in each
of the subclass {def tell} showing details, why call another print
statement (from parent class {def tell})?? I know this should be simple,
but I'm confused. LOL, obviously.
Thank you in advance!
class SchoolMember:
'''Represents any school member.'''
def __init__(self,name,age):
self.name = name
self.age = age
print '(Initialized SchoolMember: %s)' %self.name
def tell(self):
'''Tell my details.'''
print 'Name:"%s" Age:"%s"' % (self.name, self.age),
class Teacher(SchoolMember):
'''Represents a teacher'''
def __init__(self,name,age,salary):
SchoolMember.__init__(self,name,age)
self.salary = salary
print '(Initialized Teacher: %s)' %self.name
def tell(self):
SchoolMember.tell(self)
print 'Salary: "%d"' % self.salary
class Student(SchoolMember):
'''Represents a student.'''
def __init__(self,name,age,marks):
SchoolMember.__init__(self,name,age)
self.marks = marks
print '(Initialized Student: %s)' %self.name
def tell(self):
SchoolMember.tell(self)
print 'Marks: "%d"' % self.marks
t = Teacher('Mrs. Shrividya',40,30000)
s = Student('Swaroop',22,75)
print ##prints a blank line
members = [t,s]
for member in members:
OUTPUT
$ python inherit.py
(Initialized SchoolMember: Mrs. Shrividya)
(Initialized Teacher: Mrs. Shrividya)
(Initialized SchoolMember: Swaroop)
(Initialized Student: Swaroop)
Name:"Mrs. Shrividya" Age:"40" Salary: "30000"
Name:"Swaroop" Age:"22" Marks: "75"
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