How to modify the shape value

[mshmoon]

What's your question?

I want to modify the shape value directly, by using sf.shape(i).points = [[xx,xx]]，but it is nothing useful

[karimbahgat]

Pyshp currently does not allow direct editing of files. As you mention, modifying a shape read from a shapefile with Reader will therefore only modify the shape loaded into memory, not the actual file. If you want to edit the shapes, you would read in shapes with a Reader, edit them, then write them to a new shapefile with a Writer. The Readme has an example of this: https://github.com/GeospatialPython/pyshp#editing-shapefiles