Static methods

Author: pktippa

Diff for: static_methods.py

@@ -0,0 +1,27 @@
+# When we want to access a method without an object, you can use the @staticmethod
+# @staticmethod makes the method immediately below it a static method.
+# A static method does not belong to the object and hence does not have the `self` attribute.
+# In other words the first parameter is NOT considered as an implicit reference to the object
+# and hence it cannot access the self attributes of an object of its class.
+
+class Employee:
+    __no_of_employees = 0
+    def __init__(self, emp_name, emp_age):
+        self.name = emp_name
+        self.age = emp_age
+    def employee_login(self):
+        Employee.__no_of_employees += 1
+    @staticmethod
+    def get_total_employees():
+        return Employee.__no_of_employees
+# We can pass parameters to the constructor and set the instance variables values.
+raj=Employee("Raj", 28)
+raj.employee_login()
+pradeep=Employee("Pradeep", 27)
+pradeep.employee_login()
+kumar=Employee("Kumar", 27)
+kumar.employee_login()
+print("Total employees logged in via classname : ", Employee.get_total_employees())
+# Static methods can be accessed/invoked using object reference
+# But its a good practice to invoke a static method using class name.
+print("Total employees logged in reference variable : ", kumar.get_total_employees())