I am trying to build a "One File" executable for my project with pyinstaller and a .spec file. The content of the spec file is as follows:

# -*- mode: python -*-block_cipher = Nonea = Analysis(['__main__.py'],pathex=['D:\\opt_frame'],binaries=[],datas=[],hiddenimports=['scipy.special', 'scipy.special.comb'],hookspath=[],runtime_hooks=[],excludes=[],win_no_prefer_redirects=False,win_private_assemblies=False,cipher=block_cipher)
pyz = PYZ(a.pure, a.zipped_data,cipher=block_cipher)
exe = EXE(pyz,a.scripts,exclude_binaries=True,name='__main__',debug=False,strip=False,upx=True,console=True )
coll = COLLECT(exe,a.binaries,a.zipfiles,a.datas,strip=False,upx=True,name='__main__')

I am getting the following error when I am trying to run the executable:

File "site-packages\scipy\special\__init__.py", line 640, in <module>File "d:\opt_frame\.venv\lib\site-packages\PyInstaller\loader\pyimod03_importers.py", line 714, in load_modulemodule = loader.load_module(fullname)
ImportError: DLL load failed: The specified module could not be found.

It fails when trying to import scipy.special even though I have added it to hiddenimports section.

My environment is as follows:

• Windows 10
• python 3.6.6
• pyinstaller 3.3.1
• scipy 1.1.0

I had the exact same problem and I found a solution in another thread, (How do you resolve 'hidden imports not found!' warnings in pyinstaller for scipy?)

I made the hook-scipy.py file that Chris's answer suggested with the exact same code:

    from PyInstaller.utils.hooks import collect_submodulesfrom PyInstaller.utils.hooks import collect_data_fileshiddenimports = collect_submodules('scipy')datas = collect_data_files('scipy')

Worked like a charm! Hope this helps you as well.