Commit 623e004

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Property in Python

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	`1`	`+# Copyright (C) Deepali Srivastava - All Rights Reserved`
	`2`	`+# This code is part of Python course available on CourseGalaxy.com`
	`3`	`+`
	`4`	`+class Product:`
	`5`	`+ def __init__(self,x,y):`
	`6`	`+ self._x = x`
	`7`	`+ self._y = y`
	`8`	`+`
	`9`	`+ def display(self):`
	`10`	`+ print(self._x, self._y)`
	`11`	`+`
	`12`	`+ @property`
	`13`	`+ def value(self):`
	`14`	`+ return self._x`
	`15`	`+`
	`16`	`+ @value.setter`
	`17`	`+ def value(self, val):`
	`18`	`+ self._x = val`
	`19`	`+`
	`20`	`+ @property`
	`21`	`+ def y(self):`
	`22`	`+ return self._y`
	`23`	`+`
	`24`	`+ @y.setter`
	`25`	`+ def y(self, val):`
	`26`	`+ self._y = val`
	`27`	`+`
	`28`	`+`
	`29`	`+`
	`30`	`+p = Product(12,24)`
	`31`	`+print(p.value)`
	`32`	`+print(p.value + 2)`
	`33`	`+p.value = 10`
	`34`	`+print(p.y)`
	`35`	`+p.y = 12`
	`36`	`+print(p.y)`

Lines changed: 31 additions & 0 deletions

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	`1`	`+# Copyright (C) Deepali Srivastava - All Rights Reserved`
	`2`	`+# This code is part of Python course available on CourseGalaxy.com`
	`3`	`+`
	`4`	`+class Person:`
	`5`	`+ def __init__(self, name, age):`
	`6`	`+ self.name = name`
	`7`	`+ self.age = age`
	`8`	`+`
	`9`	`+ def display(self):`
	`10`	`+ print(self.name,self.age)`
	`11`	`+`
	`12`	`+ @property`
	`13`	`+ def age(self):`
	`14`	`+ return self._age`
	`15`	`+`
	`16`	`+ @age.setter`
	`17`	`+ def age(self, new_age):`
	`18`	`+ if 20< new_age<80:`
	`19`	`+ self._age = new_age`
	`20`	`+ else:`
	`21`	`+ raise ValueError('Age must be between 20 and 80')`
	`22`	`+`
	`23`	`+p = Person('Peter', 30)`
	`24`	`+print(p.age)`
	`25`	`+p.age = 200`
	`26`	`+print(p.age)`
	`27`	`+`
	`28`	`+p1 = Person('Dev',200)`
	`29`	`+p.age = p.age +1`
	`30`	`+p.age += 1`
	`31`	`+print(p.age)`

Lines changed: 37 additions & 0 deletions

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	`1`	`+# Copyright (C) Deepali Srivastava - All Rights Reserved`
	`2`	`+# This code is part of Python course available on CourseGalaxy.com`
	`3`	`+`
	`4`	`+class Employee:`
	`5`	`+ def __init__(self, name, password, salary):`
	`6`	`+ self._name = name`
	`7`	`+ self._password = password`
	`8`	`+ self._salary = salary`
	`9`	`+`
	`10`	`+ @property`
	`11`	`+ def name(self):`
	`12`	`+ return self._name`
	`13`	`+`
	`14`	`+ @property`
	`15`	`+ def password(self):`
	`16`	`+ raise AttributeError('password not readable')`
	`17`	`+`
	`18`	`+ @password.setter`
	`19`	`+ def password(self, new_password):`
	`20`	`+ self._password = new_password`
	`21`	`+`
	`22`	`+ @property`
	`23`	`+ def salary(self):`
	`24`	`+ return self._salary`
	`25`	`+`
	`26`	`+ @salary.setter`
	`27`	`+ def salary(self, new_salary):`
	`28`	`+ self._password = new_salary`
	`29`	`+`
	`30`	`+`
	`31`	`+e = Employee('Jill', 'feb31', 5000)`
	`32`	`+print(e.name)`
	`33`	`+#e.name = 'dd'`
	`34`	`+#print(e.password)`
	`35`	`+e.password = 'feb29'`
	`36`	`+print(e.salary)`
	`37`	`+e.salary = 6000`

Lines changed: 24 additions & 0 deletions

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	`1`	`+# Copyright (C) Deepali Srivastava - All Rights Reserved`
	`2`	`+# This code is part of Python course available on CourseGalaxy.com`
	`3`	`+`
	`4`	`+class Rectangle():`
	`5`	`+ def __init__(self,length,breadth):`
	`6`	`+ self.length = length`
	`7`	`+ self.breadth = breadth`
	`8`	`+`
	`9`	`+ def area(self):`
	`10`	`+ return self.length * self.breadth`
	`11`	`+`
	`12`	`+ def perimeter(self):`
	`13`	`+ return 2*(self.length + self.breadth)`
	`14`	`+`
	`15`	`+ @property`
	`16`	`+ def diagonal(self):`
	`17`	`+ return (self.lengthself.length + self.breadth self.breadth)**0.5`
	`18`	`+`
	`19`	`+r = Rectangle(2,5)`
	`20`	`+print(r.diagonal)`
	`21`	`+r.length = 10`
	`22`	`+print(r.diagonal)`
	`23`	`+`
	`24`	`+`

Lines changed: 34 additions & 0 deletions

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	`1`	`+# Copyright (C) Deepali Srivastava - All Rights Reserved`
	`2`	`+# This code is part of Python course available on CourseGalaxy.com`
	`3`	`+`
	`4`	`+class Product:`
	`5`	`+ def __init__(self,x,y):`
	`6`	`+ self._x = x`
	`7`	`+ self._y = y`
	`8`	`+`
	`9`	`+ def display(self):`
	`10`	`+ print(self._x, self._y)`
	`11`	`+`
	`12`	`+ @property`
	`13`	`+ def value(self):`
	`14`	`+ return self._x`
	`15`	`+`
	`16`	`+ @value.setter`
	`17`	`+ def value(self, val):`
	`18`	`+ self._x = val`
	`19`	`+`
	`20`	`+ @value.deleter`
	`21`	`+ def value(self):`
	`22`	`+ print('value deleted')`
	`23`	`+`
	`24`	`+ @property`
	`25`	`+ def y(self):`
	`26`	`+ return self._y`
	`27`	`+`
	`28`	`+ @y.setter`
	`29`	`+ def y(self, val):`
	`30`	`+ self._y = val`
	`31`	`+`
	`32`	`+p = Product(12,24)`
	`33`	`+del p.value`
	`34`	`+`

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