def assert_lt(left, right, message=None, extra=None):
    """Raises an AssertionError if left_hand >= right_hand."""
    assert left < right, _assert_fail_message(message, left, right, ">=", extra)
def assert_lt ( left , right , message = None , extra = None ) : assert left < right , _assert_fail_message ( message , left , right , ">=" , extra )
Raises an AssertionError if left_hand >= right_hand.