Pthon Decorators

Author: OmkarPathak

Programs/P46_Decorators.py

@@ -1,6 +1,11 @@
 # Author: OMKAR PATHAK
 # In this example program we will see how decorators work in Python
 
+# Decorators provide a simple syntax for calling higher-order functions. By definition, 
+# a decorator is a function that takes another function and extends the behavior of the
+# latter function without explicitly modifying it. Sounds confusing – but it's really not,
+# especially after we go over a number of examples.
+
 def decorator(myFunc):
     def insideDecorator(*args):
         print('insideDecorator Function executed before {}'.format(myFunc.__name__))

Programs/P47_MoreOnDecorators.py

@@ -0,0 +1,27 @@
+# Author: OMKAR PATHAK
+# In this example, we will be seeing some more concepts of decorators such as
+# property decorator, getters and setters methods.
+
+class BankAccount(object):
+    def __init__(self, firstName, lastName):
+        self.firstName = firstName
+        self.lastName = lastName
+
+    @property                   # property decorator
+    def fullName(self):
+        return self.firstName + ' ' + self.lastName
+
+    @fullName.setter
+    def fullName(self, name):
+        firstName, lastName = name.split(' ')
+        self.firstName = firstName
+        self.lastName = lastName
+
+if __name__ == '__main__':
+    acc = BankAccount('Omkar', 'Pathak')
+    print(acc.fullName)              # Notice that we can access the method for our class BankAccount without
+                                     # parenthesis! This is beacuse of property decorator
+
+    # acc.fullName = 'Omkar Pathak'    #This throws an error! Hence setter decorator should be used.
+    acc.fullName = 'Jagdish Pathak'
+    print(acc.fullName)