'Polygon' object does not support indexing

[Juan Pablo Caram]

Error thrown by MultiPolygon(poly_buffer) in camlib.Gerber.parse_lines().

I tried MultiPolygon(poly_buffer[0:200]) and worked and MultiPolygon(poly_buffer[0:201]) and failed.

[Juan Pablo Caram]

>>> poly_buffer[200].exterior is None
True

[Juan Pablo Caram]

In [1]: import shapely

In [2]: shapely.__version__
Out[2]: '1.5.9'

[Juan Pablo Caram]

Updated Shapely to 1.5.12 without success.

[Juan Pablo Caram]

Workaround by:

if not geo.is_empty: poly_buffer.append(geo)

instead of doing

poly_buffer.append(geo)

[Juan Pablo Caram]

The workaround should not cause any problems. The original cause seems to be a bug in Shapely.