def args(**kwargs):
    """ allows us to temporarily override all the special keyword parameters in
    a with context """

    kwargs_str = ",".join(["%s=%r" % (k,v) for k,v in kwargs.items()])

    raise DeprecationWarning("""

sh.args() has been deprecated because it was never thread safe.  use the
following instead:

    sh2 = sh({kwargs})
    sh2.your_command()

or

    sh2 = sh({kwargs})
    from sh2 import your_command
    your_command()

""".format(kwargs=kwargs_str))