Adds python code (#7)

.gitignore

@@ -2,3 +2,6 @@ os/code/os/target/*
 os/code/os/target/
 database/code/__pycache__
 *.class
+__pycache__/
+*.py[cod]
+*$py.class

python_code/main.py

@@ -0,0 +1,31 @@
+from oop.basic.OopBankAccount import OopBankAccount
+
+from oop.inheritance.Student import *
+from oop.inheritance.User import *
+from oop.inheritance.StudentStatus import *
+
+def main():
+	#oop - basic
+	abhi = OopBankAccount(100, 1)
+	bob = OopBankAccount(200, 2)
+
+	abhi.transfer(bob, 50)
+
+	print(abhi.getBalance())
+
+	#oop - inheritance
+
+	sam = Student("sam", "abhi@a.cm", 25, "khulri", "Oct", 90, StudentStatus.ACTIVE)
+	sam.print_details()
+
+	# oop - inheritance and polymorphism
+
+	student = Student("Student", "stu@scaler", "batch", 100)
+	student.__class__ = User
+	student.print_details()
+
+	user = User("user", "user@gmail")
+	# user.print_details() Python does not support method overloading like java or C++
+	# we need to define method with default arguments
+if __name__ == '__main__':
+	main()

python_code/oop/SOLID/bird/Bird.py

@@ -0,0 +1,14 @@
+from abc import ABC, abstractmethod
+import BirdType
+
+class Bird(ABC):
+	def __init__(self, weight: int, colour: str, size: int, beakType : str, birdType : BirdType) -> None:
+		self.__weight = weight
+		self.__colour = colour
+		self.__size = size
+		self.__beakType = beakType
+		self.__birdType = birdType
+
+	@abstractmethod
+	def makeSound(self) -> None:
+		...

python_code/oop/SOLID/bird/BirdType.py

@@ -0,0 +1,6 @@
+from enum import Enum
+
+class BirdType(Enum):
+	Eagle = 0
+	Penguin = 1
+	Parrot = 2

python_code/oop/SOLID/bird/Eagle.py

@@ -0,0 +1,16 @@
+from Bird import *
+from BirdType import *
+from interfaces.FlyableInterface import *
+from interfaces.FlyingBehaviourInterface import *
+
+class Eagle(Bird, FlyableInterface):
+    __flyingBehaviour: FlyingBehaviourInterface = None
+    def __init__(self, weight: int, colour: str, size: int, beakType: str, birdType: BirdType, flyingBehaviour: FlyingBehaviourInterface) -> None:
+        super().__init__(weight, colour, size, beakType, birdType)
+        self.__flyingBehaviour = flyingBehaviour
+    
+    def fly(self) -> None:
+        self.__flyingBehaviour.makeFly()
+        
+    def makeSound(self) -> None:
+        ...

python_code/oop/SOLID/bird/FlappingBehaviour.py

@@ -0,0 +1,7 @@
+from Bird import *
+from BirdType import *
+from interfaces.FlyingBehaviourInterface import *
+
+class FlappingBehaviour(FlyingBehaviourInterface):
+    def makeFly(self) -> None:
+        print("Flapping")

python_code/oop/SOLID/bird/GlidingBehaviour.py

@@ -0,0 +1,7 @@
+from Bird import *
+from BirdType import *
+from interfaces.FlyingBehaviourInterface import *
+
+class GlidingBehaviour(FlyingBehaviourInterface):
+    def makeFly(self) -> None:
+        print("Gliding")

python_code/oop/SOLID/bird/Parrot.py

@@ -0,0 +1,16 @@
+from Bird import *
+from BirdType import *
+from interfaces.FlyableInterface import *
+from interfaces.FlyingBehaviourInterface import *
+
+class Parrot(Bird, FlyableInterface):
+    __flyingBehaviour: FlyingBehaviourInterface = None
+    def __init__(self, weight: int, colour: str, size: int, beakType: str, birdType: BirdType, flyingBehaviour: FlyingBehaviourInterface) -> None:
+        super().__init__(weight, colour, size, beakType, birdType)
+        self.__flyingBehaviour = flyingBehaviour
+    
+    def fly(self) -> None:
+        self.__flyingBehaviour.makeFly()
+        
+    def makeSound(self) -> None:
+        ...

python_code/oop/SOLID/bird/Penguin.py

@@ -0,0 +1,14 @@
+from Bird import *
+from BirdType import *
+from interfaces.SwimmableInterface import *
+from interfaces.FlyingBehaviourInterface import *
+
+class Penguin(Bird, SwimmableInterface):
+    def __init__(self, weight: int, colour: str, size: int, beakType: str, birdType: BirdType) -> None:
+        super().__init__(weight, colour, size, beakType, birdType)
+    
+    def fly(self) -> None:
+        self.__flyingBehaviour.makeFly()
+        
+    def makeSound(self) -> None:
+        ...

python_code/oop/SOLID/bird/Runner.py

@@ -0,0 +1,20 @@
+from distutils.ccompiler import gen_lib_options
+from Parrot import *
+from Eagle import *
+from Penguin import *
+from BirdType import *
+from interfaces.FlyableInterface import *
+from interfaces.SwimmableInterface import *
+from FlappingBehaviour import *
+from GlidingBehaviour import *
+
+#import FlappingBehaviour gives error bcoz bird is package
+
+parrot = Parrot(10, "Green", "Small", "Sharp", BirdType.Parrot, FlappingBehaviour())
+parrot.fly()
+
+eagle = Eagle(20, "Brown", "Medium", "Sharp", BirdType.Eagle, GlidingBehaviour())
+eagle.fly()
+
+penguin = Penguin(30, "Black", "Large", "Sharp", BirdType.Penguin)
+penguin.makeSound()

python_code/oop/SOLID/bird/interfaces/FlyableInterface.py

@@ -0,0 +1,6 @@
+from abc import ABC, abstractmethod
+
+class FlyableInterface(ABC):
+    @abstractmethod
+    def fly() -> None:
+        ...

python_code/oop/SOLID/bird/interfaces/FlyingBehaviourInterface.py

@@ -0,0 +1,6 @@
+from abc import ABC, abstractmethod
+
+class FlyingBehaviourInterface(ABC):
+    @abstractmethod
+    def makeFly() -> None:
+        ...

python_code/oop/SOLID/bird/interfaces/SwimmableInterface.py

@@ -0,0 +1,6 @@
+from abc import ABC, abstractmethod
+
+class SwimmableInterface:
+    @abstractmethod
+    def swim() -> None:
+        ...

python_code/oop/basic/OopBankAccount.py

@@ -0,0 +1,27 @@
+class OopBankAccount:
+	def __init__(self, balance, number):
+		self.__number = number
+		self.__balance = balance
+
+	def getNumber(self):
+		return self.__number
+
+	def setNumber(self, number):
+		self.__number = number 
+
+	def getBalance(self):
+		return self.__balance
+
+	def setBalance(self, balance):
+		self.__balance = balance
+
+	def deposit(self, amount):
+		self.__balance += amount
+
+	def withdraw(self, amount):
+		self.__balance -= amount
+
+	def transfer(self, destination, amount):
+		self.withdraw(amount)
+		destination.deposit(amount)
+

python_code/oop/inheritance/Student.py

@@ -0,0 +1,20 @@
+from oop.inheritance.User import *
+from oop.inheritance.StudentStatus import *
+
+class Student(User):
+
+	__status = StudentStatus.ACTIVE
+
+	def __init__(self, name: str, email: str, batch_name: str, psp: int) -> None:
+		super().__init__(name, email)
+		self.__batch_name = batch_name
+		
+		if (psp < 0 or psp > 100):
+			raise Exception("PSP should be between 0 and 100")
+		self.__psp = psp
+
+	def print_details(self) -> None:
+		print("In Student", self.get_name(), self.__batch_name)
+
+	def change_batch(self, batch_name: str) -> None:
+		self.batch_name = batch_name

python_code/oop/inheritance/StudentStatus.py

@@ -0,0 +1,6 @@
+from enum import Enum
+
+class StudentStatus(Enum):
+	ACTIVE = 1
+	PAUSED = 1
+	COMPLETED = 1

python_code/oop/inheritance/User.py

@@ -0,0 +1,16 @@
+class User:
+	def __init__(self, name: str, email: str) -> None:
+		self.__name = name
+		self.__email = email
+
+	def change_email(self, email: str) -> None:
+		self.__email = email
+
+	def get_name(self) -> str:
+		return self.__name
+
+	def print_details(self) -> None:
+		print("Print with no args")
+
+	def print_details(self, title: str) -> None:
+		print("\n In User:", title, self.get_name())