A Banking Class Example
Following the tutorials in
Educative I wrote my first class with inheritance. It’s basic but it works.
It’s a far cry from what I’ve done previously in C# and the self takes some getting used to.
I’m running a pep8 (flake8) plugin in my Vim to check my code, but there is a fair bit of confusion happening with my autocomplete. It’s messing with my head, particularily here in Goyo editing mode.
Here’s the class I’ve written, admist all this confusion.
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
|
class Account:
def __init__(self, title=None, balance=0):
self.title = title
self.balance = balance
def withdrawal(self, amount):
self.balance -= amount
def deposit(self, amount):
self.balance += amount
def getBalance(self):
print(self.balance)
class SavingsAccount(Account):
def __init__(self, title=None, balance=0, interestRate=0):
# calling the constructor from the parent class
super().__init__(title, balance)
self.interestRate = interestRate
def interestAmount(self):
print(self.balance * self.interestRate / 100)
a = SavingsAccount("Mark", 5000, 5)
a.deposit(1000)
a.withdrawal(500)
a.getBalance()
a.interestAmount()
|
I’m chuffed to be able to do it through Vim and run it in a terminal below
the code. Similar experience to VS Code? Kind of but there’s a feeling of
knowing the how and a little of the why.
Okay, on to Polymorphism.