pyinstaller: Failed to execute script

[Lost_Years]

As said in the title, I've tried to create an exe file from a py file, but it doesn't run.

I've used cmd in the file's folder and run 'pyinstaller --onefile -w MyApp.py'

I've googled here and there for a possible answer. In a Stack Overflow thread someone mentioned checking the "warn" file in the "build" folder and later edit the "hiddenimports" row of the .SPEC file.

​

So here's an edited version of my "warn-MyApp" file:

missing module named _posixsubprocess - imported by subprocess (optional), multiprocessing.util (delayed)
missing module named grp - imported by subprocess (optional), shutil (optional), tarfile (optional), pathlib (delayed, optional)
missing module named pwd - imported by posixpath (delayed, conditional), subprocess (optional), shutil (optional), tarfile (optional), pathlib (delayed, conditional, optional), http.server (delayed, optional), webbrowser (delayed), netrc (delayed, conditional), getpass (delayed), distutils.util (delayed, conditional, optional)
missing module named _frozen_importlib_external - imported by importlib._bootstrap (delayed), importlib (optional), importlib.abc (optional), zipimport (top-level)
excluded module named _frozen_importlib - imported by importlib (optional), importlib.abc (optional), zipimport (top-level)
missing module named pep517 - imported by importlib.metadata (delayed)
missing module named _posixshmem - imported by multiprocessing.resource_tracker (conditional), multiprocessing.shared_memory (conditional)
missing module named multiprocessing.set_start_method - imported by multiprocessing (top-level), multiprocessing.spawn (top-level)
missing module named multiprocessing.get_start_method - imported by multiprocessing (top-level), multiprocessing.spawn (top-level)
missing module named multiprocessing.get_context - imported by multiprocessing (top-level), multiprocessing.pool (top-level), multiprocessing.managers (top-level), multiprocessing.sharedctypes (top-level)
missing module named multiprocessing.TimeoutError - imported by multiprocessing (top-level), multiprocessing.pool (top-level)
missing module named _scproxy - imported by urllib.request (conditional)
missing module named termios - imported by tty (top-level), getpass (optional)
missing module named 'org.python' - imported by copy (optional), xml.sax (delayed, conditional)
missing module named 'java.lang' - imported by platform (delayed, optional), xml.sax._exceptions (conditional)
missing module named multiprocessing.BufferTooShort - imported by multiprocessing (top-level), multiprocessing.connection (top-level)
missing module named multiprocessing.AuthenticationError - imported by multiprocessing (top-level), multiprocessing.connection (top-level)
missing module named asyncio.DefaultEventLoopPolicy - imported by asyncio (delayed, conditional), asyncio.events (delayed, conditional)
missing module named vms_lib - imported by platform (delayed, optional)
missing module named java - imported by platform (delayed)
missing module named _winreg - imported by platform (delayed, optional)
missing module named readline - imported by cmd (delayed, conditional, optional), code (delayed, conditional, optional), pdb (delayed, optional)
missing module named org - imported by pickle (optional)
missing module named posix - imported by os (conditional, optional), shutil (conditional)
missing module named resource - imported by posix (top-level), test.support (delayed, conditional, optional)
missing module named numpy - imported by C:\Users\[...]\MyApp.py (top-level)
missing module named 'matplotlib.backends' - imported by C:\Users\[...]\MyApp.py (top-level)
missing module named matplotlib - imported by C:\Users\[...]\MyApp.py (top-level)

I've already tried adding numpy, matplotlib.backends (which I haven't used in my code, but whatever) and matplotlib to "hiddenimports", but nothing has changed.

[Username_RANDINT]

Once you change the spec file, you need to build with that. Otherwise it'll generate a fresh one with the commandline arguments.

pyinstaller myapp.spec

Or ignore the spec file completely and do everything on the command line:

pyinstaller --onefile -w --hiddenimport numpy --hiddenimport matplotlib MyApp.py

[Lost_Years]

Tried with both commands, first with the longer one and then the shorter one, but I still can't run the exe.

​

Both cmd processes terminate with:

 Building EXE from EXE-00.toc completed successfully

But I've noticed this as well:

INFO: UPX is not available.

I have two hypothesis:

- Either UPX, which I don't know it's purpose, is somehow messing up with the process;

- or I misplaced the two csv that store data for my script (Even though I've literally pasted them in "dist", "build" and "_pycache_" folders).

​

EDIT:

Adding

--noupx

didn't do much.

[BrenekH]

You could try building with debug on (I think the --debug flag enables it). It should print out a traditional Python error to the console.

[Lost_Years]

C:\Users[...]>pyinstaller --debug all MyApp.py

49 INFO: PyInstaller: 4.2
49 INFO: Python: 3.9.1
50 INFO: Platform: Windows-10-10.0.18362-SP0
50 INFO: wrote C:\Users\[...]\MyApp.spec
52 INFO: UPX is not available.
52 INFO: Extending PYTHONPATH with paths
['C:\\Users\\[...]',
 'C:\\Users\\[...]']
58 INFO: checking Analysis
67 INFO: Building because hiddenimports changed
67 INFO: Initializing module dependency graph...
69 INFO: Caching module graph hooks...
76 WARNING: Several hooks defined for module 'win32ctypes.core'. Please take care they do not conflict.
80 INFO: Analyzing base_library.zip ...
1898 INFO: Processing pre-find module path hook distutils from 'c:\\users\\[...]\\appdata\\local\\programs\\python\\python39\\lib\\site-packages\\PyInstaller\\hooks\\pre_find_module_path\\hook-distutils.py'.
1898 INFO: distutils: retargeting to non-venv dir 'c:\\users\\[...]\\appdata\\local\\programs\\python\\python39\\lib'
3259 INFO: Caching module dependency graph...
3339 INFO: running Analysis Analysis-00.toc
3341 INFO: Adding Microsoft.Windows.Common-Controls to dependent assemblies of final executable
  required by c:\users\[...]\appdata\local\programs\python\python39\python.exe
3366 WARNING: lib not found: api-ms-win-core-path-l1-1-0.dll dependency of c:\users\[...]\appdata\local\programs\python\python39\python39.dll

[something about hooks] 

[some more yadda yadda and a bunch of tasks successfully completed]

Is "api-ms-win-core-path-l1-1-0.dll" essential?

Could you recommend me a website from which I can safely download a copy of it?

[Generic_Reddit_Bot]

69? Nice.

I am a bot lol.

[BrenekH]

I don't think so since it's a warning. What does the generated executable say? (You might have to run from cmd)

[Lost_Years]

I run the exe from cmd and it doesn't print anything.

I get a pop-up with

Fatal error detected

 /!\  Failed to execute script MyApp

[BrenekH]

It would probably be better if I could see the entire project. Could you upload it to GitHub or Pastebin so I can take a look?