else: me._bad_keyval(cmd, k, v)
check(name is not None, "missing series name")
check(name not in me._series, "series `%s' already defined" % name)
else: me._bad_keyval(cmd, k, v)
check(name is not None, "missing series name")
check(name not in me._series, "series `%s' already defined" % name)