added aggregation and how to create module

rahulhgdev · web-flow · commit 442a56880d80 · 2021-01-21T18:13:19.000+05:30
diff --git a/Beginner_Level/How To Create Modules/ClassModules/main.py b/Beginner_Level/How To Create Modules/ClassModules/main.py
@@ -0,0 +1,11 @@
+
+
+from rectangle import Rectangle
+from  triangle import Triangle
+
+rec = Rectangle()
+tri =  Triangle()
+rec.set_values(50, 60)
+tri.set_values(10, 45)
+print(rec.area())
+print(tri.area())
diff --git a/Beginner_Level/How To Create Modules/ClassModules/polygon.py b/Beginner_Level/How To Create Modules/ClassModules/polygon.py
@@ -0,0 +1,13 @@
+class Polygon:
+
+    __width = None
+    __height = None
+
+    def set_values(self, width, height):
+        self.__width = width
+        self.__height = height
+
+    def get_width(self):
+        return self.__width
+    def get_height(self):
+        return  self.__height
diff --git a/Beginner_Level/How To Create Modules/ClassModules/rectangle.py b/Beginner_Level/How To Create Modules/ClassModules/rectangle.py
@@ -0,0 +1,7 @@
+
+
+from polygon import Polygon
+
+class Rectangle(Polygon):
+    def area(self):
+        return self.get_width() * self.get_height()
diff --git a/Beginner_Level/How To Create Modules/ClassModules/triangle.py b/Beginner_Level/How To Create Modules/ClassModules/triangle.py
@@ -0,0 +1,7 @@
+
+from polygon import Polygon:
+
+
+class Triangle(Polygon):
+    def area(self):
+        return  self.get_width() * self.get_height() / 2
diff --git a/Beginner_Level/How To Create Modules/CreateModules.py b/Beginner_Level/How To Create Modules/CreateModules.py
@@ -0,0 +1,17 @@
+
+# module is nothing but a python file
+
+#from dir import imp           --1st  u caan also use as in this line         # this code will auto appear after shifting the python file i.e. imp.py into new directory
+
+# above same code function can done with simple way of 1 line which is below
+
+
+import dir.imp as rahul           # as keyword for using short notation without as it was print((dir.imp.add(10,20)))
+
+print((rahul.add(56, 15)))
+print((rahul.mul(56, 15)))
+
+
+
+# print((imp.add(56, 15)))                --1st
+# print((imp.mul(46, 57)))                 --1st
diff --git a/Beginner_Level/How To Create Modules/dir/imp.py b/Beginner_Level/How To Create Modules/dir/imp.py
@@ -0,0 +1,7 @@
+
+
+def add(a ,b):
+    return a+b
+
+def mul(a, b):
+    return a * b
diff --git a/Beginner_Level/aggregation.py b/Beginner_Level/aggregation.py
@@ -0,0 +1,27 @@
+
+# COMPOSITION HAS relation of 'PART - OF ' #
+# AGGREGATION HAS relation of 'HAS - A'  #
+
+class Salary:
+
+    def __init__(self, pay, bonus):
+        self.pay = pay
+        self.bonus = bonus
+
+    def annual_salary(self):
+        return (self.pay*12) + self.bonus
+
+class Employee:
+    def __init__(self, name, age , salary):
+        self.name= name
+        self.age= age
+        self.obj_salary = salary;
+
+    def total_salary(self):
+        return   self.obj_salary.annual_salary()
+
+
+salary = Salary(15000, 10000)
+emp = Employee('easynamila', 25, salary)           # Its unidirectional only salary is passing not name and age     # don't forget to pass salary object
+
+print(emp.total_salary())
