def __init__(self, f):
"""
If there are no decorator arguments, the function
to be decorated is passed to the constructor.
"""
PrintUtils.green("Inside __init__()")
self.f = f
def __init__(self, arg1, arg2, arg3):
"""
If there are decorator arguments, the function
to be decorated is not passed to the constructor!
"""
PrintUtils.green("Inside __init__()")
self.arg1 = arg1
self.arg2 = arg2
self.arg3 = arg3
def __call__(self, *args):
"""
The __call__ method is not called until the
decorated function is called.
"""
print
PrintUtils.green("Inside __call__()")
self.f(*args)
PrintUtils.green("After self.f(*args)")
print
def __call__(self, f):
"""
If there are decorator arguments, __call__() is only called
once, as part of the decoration process! You can only give
it a single argument, which is the function object.
"""
PrintUtils.green("Inside __call__()")
@wraps(f)
def wrapped_f(*args):
PrintUtils.green("Inside wrapped_f()")
print 'Decorator arguments: ', self.arg1, self.arg2, self.arg3
f(*args)
PrintUtils.green("After f(*args)")
return wrapped_f
PrintUtils.green("Inside __init__()")
self.f = f
def __call__(self, *args):
"""
The __call__ method is not called until the
decorated function is called.
"""
print
PrintUtils.green("Inside __call__()")
self.f(*args)
PrintUtils.green("After self.f(*args)")
print
@decorate_without_arguments
def sayHello(a1, a2, a3, a4):
print 'say Hello arguments: ', a1, a2, a3, a4
PrintUtils.blue('After decoration')
print
PrintUtils.blue('Preparing to call sayHello()')
sayHello('say', 'hello', 'argument', 'list')
PrintUtils.blue('After first sayHello() call')
sayHello('a', 'different','set of', 'arguments')
print
PrintUtils.blue('After second sayHello() call')
def wrapped_f(*args):
PrintUtils.green("Inside wrapped_f()")
print 'Decorator arguments: ', self.arg1, self.arg2, self.arg3
f(*args)
PrintUtils.green("After f(*args)")
"""
PrintUtils.green("Inside __call__()")
@wraps(f)
def wrapped_f(*args):
PrintUtils.green("Inside wrapped_f()")
print 'Decorator arguments: ', self.arg1, self.arg2, self.arg3
f(*args)
PrintUtils.green("After f(*args)")
return wrapped_f
@decorator_with_arguments("hello", "world", 42)
def sayHello(a1, a2, a3, a4):
print 'sayHello arguments', a1, a2, a3, a4
PrintUtils.blue('After decorator')
print
PrintUtils.blue('Preaparing to call sayHello()')
sayHello("say", "hello", "argument", "list")
print
PrintUtils.blue('after first sayHello() call')
sayHello("a", "different", "set of", "arguments")
print
PrintUtils.blue("after second sayHello() call")
# more simple
def decorator_function_with_arguments(arg1, arg2, arg3):
def wrap(f):
