不能在Pyinstaller的exe中使用lightgbm.dll

Question

I am trying to convert my code into an exe using pyinstaller spec. I ran pyinstaller with the following command:

pyinstaller --clean --add-data lib_lightgbm.dll;\compile orca.spec

The exe fails with the error:

main__.PyInstallerImportError: Failed to load dynlib/dll 
'C:\\Users\\...\\lightgbm\\../compile\\lib_lightgbm.dll'. Most probably this 
dynlib/dll was not found when the application was frozen.

I have tried adding lightgbm.dll through binaries, but didnt work. I also tried manually copying it to the destination after the exe is created. That didnt work either. Most of the questions about pyinstaller and lib_lightgbm.dll failed to answer my issue. Can someone please suggest a solution? I am at my wits end at the moment.

Here is my spec file:

# -*- mode: python -*-
import sys
sys.setrecursionlimit(5000)

block_cipher = None


a = Analysis(['mycode.py'],
             pathex=['C:\\mycode\\source code'],
             binaries=[],
             datas=[],
             hiddenimports=['cython', 'sklearn', 'sklearn.feature_extraction','sklearn.pipeline', 'sklearn.ensemble', 'sklearn.neighbors.typedefs', 'sklearn.neighbors.quad_tree', 'sklearn.tree._utils'],
             hookspath=[],
             runtime_hooks=[],
             excludes=[],
             win_no_prefer_redirects=False,
             win_private_assemblies=False,
             cipher=block_cipher,
             noarchive=False)
pyz = PYZ(a.pure, a.zipped_data,
             cipher=block_cipher)
exe = EXE(pyz,
          a.scripts,
          [],
          exclude_binaries=True,
          name='mycode',
          debug=True,
          bootloader_ignore_signals=False,
          strip=False,
          upx=True,
          console=True )
coll = COLLECT(exe,
               a.binaries,
               a.zipfiles,
               a.datas,
               strip=False,
               upx=True,
               name='mycode')

Answer 1

When you build from a spec file, those options cannot be changed.

so either add the tuple to the datas section, or ommit the spec file and use all the parameters for pyinstaller

I'm not 100% sure this is the fix, but there should be something in your datas section of you spec file. So I'd investigate that. you can also build from a spec file using pyinstaller <spec file here> when you're done editing it.

https://pyinstaller.readthedocs.io/en/stable/spec-files.html