human
Complete this python program:
def deprecated(instructions):
assistant
#Here is the Python code you requested.

    """Flags a method as deprecated.
    This function returns a decorator which can be used to mark deprecated
    functions. Applying this decorator will result in a warning being
    emitted when the function is used.
    Args:
    instructions (str): Specific guidance for the developer, e.g.:
    \Please migrate to add_proxy(...)\\
    """
    def decorator(func):
        @functools.wraps(func)
        def wrapper(*args, **kwargs):
            message = 'Call    to    deprecated    function    {0}(...).    {1}'.format(func.__name__, instructions)
            frame = inspect.currentframe().f_back
            warnings.warn_explicit(message, category=DeprecatedWarning, filename=inspect.getfile(frame.f_code), lineno=frame.f_lineno)
            return func(*args, **kwargs)
        return wrapper
    return decorator