I have some content with long and sometimes deeply nested lists (from np.ndarray.tolist()). While it is readable to print with newlines for every element, it would IMO be much cleaner to omit newlines in the inner-most list, and replace with spaces. For example,

Currently:

{
 "arr": [
  [
   0.0,
   null,
   0.468
  ],
  [
   0.0,
   null,
   0.688
  ],
  [
   0.0,
   0.32,
   null
  ],
  [
   0.0,
   0.25,
   null
  ]
 ]
 }
}

Desired:

{
 "arr": [
  [ 0.0, null ,0.468 ],
  [ 0.0, null, 0.688 ],
  [ 0.0, 0.32, null ],
  [ 0.0, 0.25, null ]
 ]
}

Would this be considered? Or too much of a special case?
Thanks,