1 # Python 3 Patterns, Recipes and Idioms
   2 #                           Release 1.0
   3 #                           Bruce Eckel
   4 #
   5 # python-3-patterns-idioms/code/PythonDecorators/entry_exit_class.py
   6 
   7 class entry_exit(object):
   8 
   9     def __init__(self, f):
  10         self.f = f
  11 
  12     def __call__(self):
  13         print("Entering", self.f.__name__)
  14         self.f()
  15         print("Exited", self.f.__name__)
  16 
  17 @entry_exit
  18 def func1():
  19     print("inside func1()")
  20 
  21 @entry_exit
  22 def func2():
  23     print("inside func2()")
  24 
  25 func1()
  26 func2()output = '''
  27 ('Entering', 'func1')
  28 inside func1()
  29 ('Exited', 'func1')
  30 ('Entering', 'func2')
  31 inside func2()
  32 ('Exited', 'func2')
  33 '''