Main KV File cant be found in Pyinstaller exe

问题

I'm at my wits end here... So I have a kivy app that runs fine from the interpreter and fine when built as a directory. But it doesn't seem to matter how I build it, the resulting exe always fails to find my main.kv file. My file structure is that I basically have images and a bunch of screens.

main.py
main.kv
resources/image 1
         /image 2
         /kv_files/screen1
                  /screen2 

I have been over all the similar question on SO including this one, and this one and this one. I think I have tried all of the options, most recently I have added

def resource_path(relative_path):
""" Get absolute path to resource, works for dev and for PyInstaller """
try:
    # PyInstaller creates a temp folder and stores path in _MEIPASS
    base_path = sys._MEIPASS
except Exception:
    base_path = os.environ.get("_MEIPASS2",os.path.abspath("."))

return os.path.join(base_path, relative_path)

to the top of my script and

 resource_path('main.kv')

just before 'app.run()'. And at this point I feel like I've tried every other combination from the different suggestions. Spec file is

# -*- mode: python ; coding: utf-8 -*-
 from kivy_deps import sdl2, glew

block_cipher = None

a = Analysis(['C:\\Users\\nicks\\PycharmProjects\\Winapp\\main.py'],
         pathex=['C:\\Users\\nicks\\Desktop\\Winapp'],
         binaries=[],
         datas=[('C:\\Users\\nicks\\PycharmProjects\\Winapp\\main.kv', '.')],
         hiddenimports=['pkg_resources.py2_warn', 'win32timezone'],
         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)
a.datas += [('main.kv', 'C:/users/nicks/PyCharmProjects/Winapp/main.kv', 'DATA')]

exe = EXE(pyz, Tree('C:\\Users\\nicks\\PycharmProjects\\Winapp\\resources', 'DATA'),
      a.scripts,
      a.binaries,
      a.zipfiles,
      a.datas,
      *[Tree(p) for p in (sdl2.dep_bins + glew.dep_bins)],
      name='mainapp',
      debug=True,
      bootloader_ignore_signals=False,
      strip=False,
      upx=True,
      upx_exclude=[],
      runtime_tmpdir=None,
      console=True)

It seems whatever I try, the command line gives me

Traceback (most recent call last):
File "main.py", line 147, in <module>
File "lib\site-packages\kivy\lang\builder.py", line 288, in load_file
FileNotFoundError: [Errno 2] No such file or directory: 'main.kv'

in case its of any use, line 147 is

GUI = Builder.load_file('main.kv')

So I can see why not being able to find it is a problem. I've been over the PyInstaller docs about how a.datas and Tree are supposed to be structured so I think they are ok, but I still feel that there is somehting fundamental that I'm not getting. Any help at all is gratefully received...

回答1:

Here is how I do it. In my main.spec file, I specify my kv file like this:

         datas=[('gamescreen.kv', '.')]

Since it is in the same folder as my main.py, The full path is not needed.

To add the sys._MEIPASS to the resource path, I use (at the top of main.py):

if getattr(sys, 'frozen', False):
    # this is a Pyinstaller bundle
    kivy.resources.resource_add_path(sys._MEIPASS)

Also, just a reminder that the pyinstaller has some strange behavior concerning command line arguments. Note the documentation that discusses the limited options that actually have an effect when pyinstaller is run with a .spec file as an argument. Some command line options are silently ignored in that situation.

来源：https://stackoverflow.com/questions/61599799/main-kv-file-cant-be-found-in-pyinstaller-exe