Failed to save a valid psd file

[duncankam]

• psdwriter version:
• Python version: 3.11
• Operating System: mac

I

I simply open the file, call psd_to_nested_layers(), then call nested_layers_to_psd() and output the psd file.
The file may have still all the layers there, but it is no longer viewable with Preview, programmatically I can still find all layers there. Just a patch of black in Preview.

What I Did

import pytoshop
from pytoshop import enums
from pytoshop.user import nested_layers
from PIL import Image
import io

in_fpn = 'original.psd'
out_fpn = 'updated.psd'

def test_nested_layers_no_adjust(filename, outfilename):

with open(filename, 'rb') as fd:
    psd = pytoshop.read(fd)

    layers = nested_layers.psd_to_nested_layers(psd)
    
    for layer in layers:
      print(layer.name)

    psd2 = nested_layers.nested_layers_to_psd(layers, enums.ColorMode.rgb )

    with open(outfilename, 'wb')as fo:
       psd2.write(fo)

test_nested_layers_no_adjust(in_fpn, out_fpn)

[duncankam]

After investigation, this issue is similar to #30.