Indirectlty convert string to float in JSON file

[buran]

When you convert to float, what does strip() does (which I don't do in my version?)

it strips the leading/trailing whitespace if present after split at comma,
But you are right - it's not really necessary. it can be removed

feature['geometry']['coordinates'] = [float(coord) for coord in coordinates]

or using map if you prefer

feature['geometry']['coordinates'] = list(map(float, coordinates))