decorators.py

   1 #!/usr/bin/env python3
   2
   3 from datetime import datetime
   4 import functools
   5
   6
   7 def invocation_logged(func):
   8     @functools.wraps(func)
   9     def wrapper(*args, **kwargs):
  10         now = datetime.now()
  11         timestamp = now.strftime("%d-%b-%Y (%H:%M:%S.%f)")
  12         print("%s(%s): Entered function" % (func.__name__, timestamp))
  13         ret = func(*args, **kwargs)
  14         now = datetime.now()
  15         timestamp = now.strftime("%d-%b-%Y (%H:%M:%S.%f)")
  16         print("%s(%s): Exited function" % (func.__name__, timestamp))
  17         return ret
  18
  19     return wrapper
  20
  21
  22 # Test
  23 # @invocation_logged
  24 # def f(x):
  25 #    print(x * x)
  26 #    return x * x
  27 #
  28 # q = f(10)
  29 # print(q)