Save functionality broken; ESRNN Model Object structure not reflected in save & load

[PasqualeZingo]

There seems to be an issue with the save function for the ESRNN model. When running

model = ESRNN()

model.save('esrnn_weights.model')

The following error occurs:

---------------------------------------------------
AttributeError    Traceback (most recent call last)
<ipython-input-28-4822649eb25a> in <module>
----> 1 model.save('esrnn_weights.model')

~/.local/lib/python3.8/site-packages/ESRNN/ESRNN.py in save(self, model_dir, copy)
    494 
    495     print('Saving model to:\n {}'.format(model_dir)+'\n')
--> 496     torch.save({'model_state_dict': self.es.state_dict()}, es_filepath)
    497     torch.save({'model_state_dict': self.rnn.state_dict()}, rnn_filepath)
    498 

AttributeError: 'ESRNN' object has no attribute 'es'

While exploring this, the I found that the 'save' function is referencing es, mc and rnn, none of which are in the top level of the ESRNN object (self) but in self.esrnn (this can be confirmed with dir(model) and dir(model.esrnn).

In the present state of the project, saving models requires a fair bit of hacking