fixed .size error

[sbarratt]

.size does not exist for tuples. Replaced with len

[cc7768]

Thanks for submitting this! Great for people to see these types of things and leave some feedback.

If I'm not mistaken (which is possible), q should be a numpy array. Maybe instead of changing from .size to len we should make sure the input is a numpy array (or change it to one). @jstac @mmcky @spencerlyon2 @oyamad any thoughts?

[sbarratt]

You could do:

self._q = np.array(q)

[oyamad]

Or,

self._q = np.asarray(q)

which does not make a copy when q is already a numpy array.

Otherwise, if one wants to keep .size (and self._q as is), could do n=self.Q.size, where self.Q is a numpy array.

[jstac]

@oyamad 's first suggestion sounds good. Just waiting for some major reorganizations of the repo and lectures to finish and then we can make this change. @sbarratt Many thanks.

[jstac]

@sbarratt Thanks again for flagging this. I'm closing the PR but we'll make the fix suggested above.