How can I log a functions arguments in a reusable way in Python? -

i've found myself writing code several times:

def my_func(a, b, *args, **kwargs):     saved_args = locals() # learned http://stackoverflow.com/a/3137022/2829764     local_var = "this other local var don't want log"     try:         a/b     except exception e:         logging.exception("oh no! args were: " + str(saved_args))         raise 

running my_func(1, 0, "spam", "ham", my_kwarg="eggs") gives output on stderr:

error:root:oh no! args were: {'a': 1, 'args': (u'spam', u'ham'), 'b': 0, 'kwargs': {'my_kwarg': u'eggs'}} traceback (most recent call last):   file "/users/kuzzooroo/desktop/question.py", line 17, in my_func     a/b zerodivisionerror: division 0 

my question is, can write reusable don't have save locals() @ top of function? , can done in nice pythonic way?

edit: 1 more request in response @mtik00: ideally i'd way access saved_args or within my_func can other log uncaught exceptions (maybe want catch exception in my_func, log error, , keep going).

decorators looking for. here's example:

import logging functools import wraps   def arg_logger(func):      @wraps(func)     def new_func(*args, **kwargs):         saved_args = locals()         try:             return func(*args, **kwargs)         except:             logging.exception("oh no! args were: " + str(saved_args))             raise      return new_func   @arg_logger def func(arg1, arg2):     return 1 / 0  if __name__ == '__main__':     func(1, 2) 

here, i'm using arg_logger() decorator. apply decorator function want have new behavior.

there's discussion decorators here.