Assert always evaluates to True

[shivakanthsujit]

In these lines, because the assert statement is broken into multiple lines and hence covered with parentheses, the assert evaluates the tuple itself. So it will always evaluate to True.

https://github.com/ikostrikov/jaxrl/blob/36748627147c5914b3a0ee896c4313aadd062018/jaxrl/networks/common.py#L80-L81 https://github.com/ikostrikov/jaxrl/blob/36748627147c5914b3a0ee896c4313aadd062018/jaxrl/networks/common.py#L89-L90

This can be fixed by changing it to

assert loss_fn is not None or grads is not None, \
                'Either a loss function or grads must be specified.'

assert has_aux, \
                    'When grads are provided, expects no aux outputs.'