try:
    from functools import wraps
except ImportError:
    # BBB for Python 2.4
    # Taken over from functools.py in Python 2.7,
    # adapted because they use C code for 'partial' objects.

    # update_wrapper() and wraps() are tools to help write
    # wrapper functions that can handle naive introspection

    WRAPPER_ASSIGNMENTS = ('__module__', '__name__', '__doc__')
    WRAPPER_UPDATES = ('__dict__',)

    def partial(func, *args, **keywords):
        # Taken from the rought equivalent code on
        # https://docs.python.org/2/library/functools.html
        def newfunc(*fargs, **fkeywords):
            newkeywords = keywords.copy()
            newkeywords.update(fkeywords)
            return func(*(args + fargs), **newkeywords)
        newfunc.func = func
        newfunc.args = args
        newfunc.keywords = keywords
        return newfunc

    def update_wrapper(wrapper,
                       wrapped,
                       assigned = WRAPPER_ASSIGNMENTS,
                       updated = WRAPPER_UPDATES):
        """Update a wrapper function to look like the wrapped function

           wrapper is the function to be updated
           wrapped is the original function
           assigned is a tuple naming the attributes assigned directly
           from the wrapped function to the wrapper function (defaults to
           functools.WRAPPER_ASSIGNMENTS)
           updated is a tuple naming the attributes of the wrapper that
           are updated with the corresponding attribute from the wrapped
           function (defaults to functools.WRAPPER_UPDATES)
        """
        for attr in assigned:
            setattr(wrapper, attr, getattr(wrapped, attr))
        for attr in updated:
            getattr(wrapper, attr).update(getattr(wrapped, attr, {}))
        # Return the wrapper so this can be used as a decorator via partial()
        return wrapper

    def wraps(wrapped,
              assigned = WRAPPER_ASSIGNMENTS,
              updated = WRAPPER_UPDATES):
        """Decorator factory to apply update_wrapper() to a wrapper function

           Returns a decorator that invokes update_wrapper() with the decorated
           function as the wrapper argument and the arguments to wraps() as the
           remaining arguments. Default arguments are as for update_wrapper().
           This is a convenience function to simplify applying partial() to
           update_wrapper().
        """
        return partial(update_wrapper, wrapped=wrapped,
                       assigned=assigned, updated=updated)