python - How can I pass a variable in a decorator to function's argument in a decorated function? -

i in progress learn python. points me correct way.
i'd below:

def decorate(function):     def wrap_function(*args, **kwargs):         str = 'hello!'  # want         return function(*args, **kwargs)     return wrap_function  @decorate def print_message():     # i'd pass 'str' mentioned above     # functions' argument below:     print(str)  # 'str' same above 

any idea? in advance.

you can't pass own name, can add keywords.

def decorate(function):     def wrap_function(*args, **kwargs):         kwargs['str'] = 'hello!'         return function(*args, **kwargs)     return wrap_function  @decorate def print_message(*args, **kwargs):     print(kwargs['str']) 

alternatively can name own argument:

def decorate(function):     def wrap_function(*args, **kwargs):         str = 'hello!'         return function(str, *args, **kwargs)     return wrap_function  @decorate def print_message(str, *args, **kwargs):     print(str) 

class method:

def decorate(function):     def wrap_function(*args, **kwargs):         str = 'hello!'         args.insert(1, str)         return function(*args, **kwargs)     return wrap_function  class printer:     @decorate     def print_message(self, str, *args, **kwargs):         print(str)