PyInstaller “failed to execute script” Error

Question

I'm trying to make an exe file with PyInstaller however I'm unable to do so. The file is built and deposited in the dist folder, however when I try to run it, the the error "Failed to execute script {name}" pops up.

Here is the .spec file that I'm using:

# -*- mode: python ; coding: utf-8 -*-

block_cipher = None


a = Analysis(['simulator.pyw'],
             pathex=['C:\\Simulator'],
             binaries=[],
             datas=[('bin/**/*.kv', './bin/ui'), ('bin/**/*.xml', './bin/ui')],
             hiddenimports=[],
             hookspath=[],
             runtime_hooks=[],
             excludes=[],
             win_no_prefer_redirects=False,
             win_private_assemblies=True,
             cipher=block_cipher,
             noarchive=False)
pyz = PYZ(a.pure, a.zipped_data,
             cipher=block_cipher)
exe = EXE(pyz,
          a.scripts,
          [],
          exclude_binaries=True,
          name='simulator',
          debug=False,
          bootloader_ignore_signals=False,
          strip=False,
          upx=True,
          console=False , icon='bin\\ui\\icon.ico')
coll = COLLECT(exe,
               a.binaries,
               a.zipfiles,
               a.datas,
               strip=False,
               upx=True,
               upx_exclude=[],
               name='simulator')

and this is the output from the console:

LOG

What could be the problem?

Answer 1

So you are using Kivy and it logs several errors:

picamera - ImportError: No module named picamera
  File "c:\python27\lib\site-packages\kivy\core\__init__.py", line 63, in core_select_lib
    fromlist=[modulename], level=0)
  File "c:\python27\lib\site-packages\kivy\core\camera\camera_picamera.py", line 18, in <module>
    from picamera import PiCamera

gi - ImportError: No module named gi.repository
  File "c:\python27\lib\site-packages\kivy\core\__init__.py", line 63, in core_select_lib
    fromlist=[modulename], level=0)
  File "c:\python27\lib\site-packages\kivy\core\camera\camera_gi.py", line 10, in <module>
    from gi.repository import Gst

opencv - ImportError: No module named cv2
  File "c:\python27\lib\site-packages\kivy\core\__init__.py", line 63, in core_select_lib
    fromlist=[modulename], level=0)
  File "c:\python27\lib\site-packages\kivy\core\camera\camera_opencv.py", line 48, in <module>
    import cv2

Did you declare kivy in a requirements.txt file ?

There is also

15333 INFO: Processing pre-safe import module hook   win32com
Traceback (most recent call last):
  File "<string>", line 2, in <module>
ImportError: No module named win32com
15411 INFO: Processing pre-safe import module hook   win32com
Traceback (most recent call last):
  File "<string>", line 2, in <module>
ImportError: No module named win32com

which says a library is missing (see ImportError: No module named win32com.client ).

So, how did you declare the dependencies ? We'd need to see your project structure.

Answer 2

You can check the full traceback by starting the script via command prompt.

This can be done by pressing WIN + R and writting cmd then changing the directory with cd command until you reach the folder, and then use .\\<softwarename>.exe to run.

For example:

> cd C:\softwares\test
> pwd
C:\softwares\test
> .\test.exe

From experience, this probably is caused by a ModuleNotFoundError . If that's the problem you can add the module name to the hiddenimports list at the spec.

ie: hiddenimports=['pyodbc'],

Answer 3

The problems seemed to be indeed in Kivy ( https://kivy.org/doc/stable/guide/packaging-windows.html#alternate-installations ). I modified the .spec file and the application was built successfully.

# -*- mode: python ; coding: utf-8 -*-

block_cipher = None


a = Analysis(['simulator.pyw'],
             pathex=['C:\\Python27\\Scripts\\Simulator'],
             binaries=[],
             datas=[('./bin/ui/dynamic_classes.kv', './bin/ui/'), ('./bin/ui/main_layout.kv', './bin/ui/'), ('./bin/ui/text.xml', './bin/ui/'), ('./bin/ui/treatment_adaptive.kv', './bin/ui/'), ('./bin/ui/treatment_classic.kv', './bin/ui/'), ('./bin/ui/treatment_user.kv', './bin/ui/'), ('./bin/ui/icon.ico', './bin/ui/')],
             hiddenimports=[],
             hookspath=[],
             runtime_hooks=[],
             excludes=[],
             win_no_prefer_redirects=False,
             win_private_assemblies=True,
             cipher=block_cipher,
             noarchive=False)
pyz = PYZ(a.pure, a.zipped_data,
             cipher=block_cipher)
exe = EXE(pyz,
          a.scripts,
          [],
          exclude_binaries=True,
          name='simulator',
          debug=False,
          bootloader_ignore_signals=False,
          strip=False,
          upx=True,
          clean=True,
          console=False, icon='bin\\ui\\icon.ico')
coll = COLLECT(exe,
               a.binaries,
               a.zipfiles,
               a.datas,
               Tree('C:\\Python27\\share\\sdl2\\bin'),
               Tree('C:\\Python27\\share\\glew\\bin'),
               strip=False,
               upx=True,
               upx_exclude=[],
               name='simulator')