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Author: zpvk

oop.py

@@ -0,0 +1,104 @@
+######################## OOP in Python ########################
+
+class pandas: # making class
+    owner = "RK" #Class variable
+    
+    def __init__(self,name): #constructer
+        self.name = name                #instance variable
+        print("{0} in pnandas".format(name))
+
+    def method(self): #method
+        print('Method')
+        
+    def update(upname):
+        pandas.owner=upname
+        print(pandas.owner)
+    
+    def book(self,Name,date):
+        self.Name = Name
+        self.date = date
+        
+        print(self.Name,self.date)
+        
+pnd = pandas("Rohan") #making object using class
+pnd2 = pandas("Ravindi")
+
+pnd.method()
+
+#update class variable
+pandas.update("HMRK")
+
+#Addrass of the object
+
+print(id(pnd))
+
+#Memory size calculate by constructer
+
+pnd.book("Madolduwa",90-78)
+pnd2.book("hinsare",56-89) 
+
+class Student:
+    
+    School = "NSBM"
+    
+    def __init__(self,m1,m2,m3):
+        self.m1 = m1
+        self.m2 = m2
+        self.m3 = m3
+        
+    def avg(self):
+        return (self.m1+self.m2+self.m3)/3
+   
+    def get_m1(self): #getter 
+        return self.m1
+    
+    def set_m1(self,value): #setter
+        self.ml = value
+    
+    @classmethod         # cls and this line use for class method
+    def info(cls):
+        return cls.School
+    
+    @staticmethod 
+    def infocls():
+        print("This is Student class")
+            
+
+            
+s1 = Student(89,56,56)
+s2 = Student(45,89,75)
+
+print(s1.avg())
+print(s2.avg())
+
+print(Student.info())
+Student.infocls()
+
+######### class in class ##########3
+
+class Student1:
+    def __init__(self,name,rollno):
+         self.name = name
+         self.rollno = rollno
+         self.lap = self.laptop()  # make class objector in construcor
+         
+         
+    def show(self):
+        print(self.name,self.rollno)
+    
+    class Laptop:
+        
+        def __init__(self):
+                self.brand = "Asuss"
+                self.cpu = "i7"
+                self.ram = 8 
+                
+t1 = Student("Rohan",98123)
+t2 = Student("Ravindi",98615)
+
+lap1 = t1.lap
+lap2 = t2.lap
+
+
+          
+