function_as_decorator.py

# Slightly adapted from http://www.artima.com/weblogs/viewpost.jsp?thread=240808
# Tested under Python 2.6.6, 3.4.1

def entryExit(f):
    """
    This decorator adds the funcionality defined in new_f()
    """

    def new_f():
        """
        Adds a entering-exiting message to function calls
        """

        print('Entering {0}'.format (f.__name__))
        return_value = f()
        print('Exited {0}'.format(f.__name__))
        return return_value

    #Function name is preserved, if we don't want it comment next line
    new_f.__name__ = f.__name__
    return new_f

@entryExit
def func1():
    """
    @return 1: 
    """
    print('Now inside func1()')
    return 1

@entryExit
def func2():
    """
    @return 2:
    """
    print('Now inside func2()')
    return 2

if __name__ == '__main__':

    print(func1())
    print(func2())