python-poetry
[WinError 193] when `virtualenvs.prefer-active-python` is `true`
- Poetry version: 1.6.0.dev0
- Python version: 3.12.0
- OS version and name: Window 11
- pyproject.toml: https://github.com/devnoname120/google-play-book-downloader/blob/545b4535f24fb834dc888e7cb36223341178b857/pyproject.toml
- [x] I am on the latest stable Poetry version, installed using a recommended method.
- [x] I have searched the issues of this repo and believe that this is not a duplicate.
- [x] I have consulted the FAQ and blog for any relevant entries or release notes.
- [x] If an exception occurs when executing a command, I executed it again in debug mode (
-vvvoption) and have included the output below.
Due to #8160 I can't install the latest stable version via the command in the document.
Issue
I got
[WinError 193] %1 is not a valid Win32 application.
with virtualenvs.prefer-active-python set to true. There may be a related thread #7075.
I use pyenv to manage my Python version. To use the different Python version from the version used to install poetry, I enable virtualenvs.prefer-active-python following the document.
poetry config virtualenvs.prefer-active-python true
My current Python versions are
pyenv global: 3.12.0b4
pyenv local: 3.10.11
However poetry doesn't use 3.10.11. Here is the output of poetry debug info -vvv
Poetry
Loading configuration file C:\Users\Ivana\AppData\Roaming\pypoetry\config.toml
Version: 1.6.0.dev0
Python: 3.12.0
Stack trace:
18 ~\AppData\Roaming\pypoetry\venv\Lib\site-packages\cleo\application.py:327 in run
325│
326│ try:
→ 327│ exit_code = self._run(io)
328│ except BrokenPipeError:
329│ # If we are piped to another process, it may close early and send a
17 ~\AppData\Roaming\pypoetry\venv\Lib\site-packages\poetry\console\application.py:190 in _run
188│ self._load_plugins(io)
189│
→ 190│ exit_code: int = super()._run(io)
191│ return exit_code
192│
16 ~\AppData\Roaming\pypoetry\venv\Lib\site-packages\cleo\application.py:431 in _run
429│ io.input.interactive(interactive)
430│
→ 431│ exit_code = self._run_command(command, io)
432│ self._running_command = None
433│
15 ~\AppData\Roaming\pypoetry\venv\Lib\site-packages\cleo\application.py:473 in _run_command
471│
472│ if error is not None:
→ 473│ raise error
474│
475│ return terminate_event.exit_code
14 ~\AppData\Roaming\pypoetry\venv\Lib\site-packages\cleo\application.py:457 in _run_command
455│
456│ if command_event.command_should_run():
→ 457│ exit_code = command.run(io)
458│ else:
459│ exit_code = ConsoleCommandEvent.RETURN_CODE_DISABLED
13 ~\AppData\Roaming\pypoetry\venv\Lib\site-packages\cleo\commands\base_command.py:119 in run
117│ io.input.validate()
118│
→ 119│ status_code = self.execute(io)
120│
121│ if status_code is None:
12 ~\AppData\Roaming\pypoetry\venv\Lib\site-packages\cleo\commands\command.py:62 in execute
60│
61│ try:
→ 62│ return self.handle()
63│ except KeyboardInterrupt:
64│ return 1
11 ~\AppData\Roaming\pypoetry\venv\Lib\site-packages\poetry\console\commands\debug\info.py:27 in handle
25│ command = self.get_application().get("env info")
26│
→ 27│ exit_code: int = command.run(self.io)
28│ return exit_code
29│
10 ~\AppData\Roaming\pypoetry\venv\Lib\site-packages\cleo\commands\base_command.py:119 in run
117│ io.input.validate()
118│
→ 119│ status_code = self.execute(io)
120│
121│ if status_code is None:
9 ~\AppData\Roaming\pypoetry\venv\Lib\site-packages\cleo\commands\command.py:62 in execute
60│
61│ try:
→ 62│ return self.handle()
63│ except KeyboardInterrupt:
64│ return 1
8 ~\AppData\Roaming\pypoetry\venv\Lib\site-packages\poetry\console\commands\env\info.py:28 in handle
26│ from poetry.utils.env import EnvManager
27│
→ 28│ env = EnvManager(self.poetry).get()
29│
30│ if self.option("path"):
7 ~\AppData\Roaming\pypoetry\venv\Lib\site-packages\poetry\utils\env\env_manager.py:236 in get
234│ "virtualenvs.prefer-active-python"
235│ )
→ 236│ python_minor = self.get_python_version(
237│ precision=2, prefer_active_python=prefer_active_python, io=self._io
238│ ).to_string()
6 ~\AppData\Roaming\pypoetry\venv\Lib\site-packages\poetry\utils\env\env_manager.py:108 in get_python_version
106│
107│ if prefer_active_python:
→ 108│ executable = EnvManager._detect_active_python(io)
109│
110│ if executable:
5 ~\AppData\Roaming\pypoetry\venv\Lib\site-packages\poetry\utils\env\env_manager.py:86 in _detect_active_python
84│ )
85│
→ 86│ executable = EnvManager._full_python_path("python")
87│
88│ if executable is not None:
4 ~\AppData\Roaming\pypoetry\venv\Lib\site-packages\poetry\utils\env\env_manager.py:69 in _full_python_path
67│
68│ try:
→ 69│ executable = subprocess.check_output(
70│ [path_python, "-c", "import sys; print(sys.executable)"], text=True
71│ ).strip()
3 ~\.pyenv\pyenv-win\versions\3.12.0b4\Lib\subprocess.py:466 in check_output
464│ kwargs['input'] = empty
465│
→ 466│ return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
467│ **kwargs).stdout
468│
2 ~\.pyenv\pyenv-win\versions\3.12.0b4\Lib\subprocess.py:548 in run
546│ kwargs['stderr'] = PIPE
547│
→ 548│ with Popen(*popenargs, **kwargs) as process:
549│ try:
550│ stdout, stderr = process.communicate(input, timeout=timeout)
1 ~\.pyenv\pyenv-win\versions\3.12.0b4\Lib\subprocess.py:1026 in __init__
1024│ encoding=encoding, errors=errors)
1025│
→ 1026│ self._execute_child(args, executable, preexec_fn, close_fds,
1027│ pass_fds, cwd, env,
1028│ startupinfo, creationflags, shell,
OSError
[WinError 193] %1 不是有效的 Win32 應用程式。
at ~\.pyenv\pyenv-win\versions\3.12.0b4\Lib\subprocess.py:1538 in _execute_child
1534│ sys.audit("subprocess.Popen", executable, args, cwd, env)
1535│
1536│ # Start the process
1537│ try:
→ 1538│ hp, ht, pid, tid = _winapi.CreateProcess(executable, args,
1539│ # no special security
1540│ None, None,
1541│ int(not close_fds),
1542│ creationflags,
It happens to me too, but is not only when virtualenvs.prefer-active-python is set to true.
for instance: Poetry version: 1.6.1 Python version: 3.12.0 OS version and name: Window 11 pyenv: 3.1.1 (installed when python 3.12.0 was configured as global in pyenv)
Changed to python 3.11.6
pyenv global 3.11.6 pyenv versions
- 3.11.6 (set by %USERPROFILE%.pyenv\pyenv-win\version) 3.12.0
In a new folder run poetry new:
poetry new .
Then edit my newly generated pyproject.toml to use python ~3.11
[tool.poetry]
name = "test"
version = "0.1.0"
description = ""
authors = [""]
readme = "README.md"
[tool.poetry.dependencies]
python = "~3.11"
[build-system]
requires = ["poetry-core"]
build-backend = "poetry.core.masonry.api"
Then executing either poetry shell, poetry install or any command that tries to create the venv returns this:
The currently activated Python version 3.12.0 is not supported by the project (~3.11).
Trying to find and use a compatible version.
[WinError 193] %1 is not a valid Win32 application
poetry shell -vvv
Loading configuration file C:\Users\Fa\AppData\Roaming\pypoetry\config.toml
The currently activated Python version 3.12.0 is not supported by the project (~3.11).
Trying to find and use a compatible version.
Trying python3
Stack trace:
13 ~\AppData\Roaming\pypoetry\venv\Lib\site-packages\cleo\application.py:327 in run
325│
326│ try:
→ 327│ exit_code = self._run(io)
328│ except BrokenPipeError:
329│ # If we are piped to another process, it may close early and send a
12 ~\AppData\Roaming\pypoetry\venv\Lib\site-packages\poetry\console\application.py:190 in _run
188│ self._load_plugins(io)
189│
→ 190│ exit_code: int = super()._run(io)
191│ return exit_code
192│
11 ~\AppData\Roaming\pypoetry\venv\Lib\site-packages\cleo\application.py:431 in _run
429│ io.input.interactive(interactive)
430│
→ 431│ exit_code = self._run_command(command, io)
432│ self._running_command = None
433│
10 ~\AppData\Roaming\pypoetry\venv\Lib\site-packages\cleo\application.py:473 in _run_command
471│
472│ if error is not None:
→ 473│ raise error
474│
475│ return terminate_event.exit_code
9 ~\AppData\Roaming\pypoetry\venv\Lib\site-packages\cleo\application.py:454 in _run_command
452│
453│ try:
→ 454│ self._event_dispatcher.dispatch(command_event, COMMAND)
455│
456│ if command_event.command_should_run():
8 ~\AppData\Roaming\pypoetry\venv\Lib\site-packages\cleo\events\event_dispatcher.py:26 in dispatch
24│
25│ if listeners:
→ 26│ self._do_dispatch(listeners, event_name, event)
27│
28│ return event
7 ~\AppData\Roaming\pypoetry\venv\Lib\site-packages\cleo\events\event_dispatcher.py:89 in _do_dispatch
87│ break
88│
→ 89│ listener(event, event_name, self)
90│
91│ def _sort_listeners(self, event_name: str) -> None:
6 ~\AppData\Roaming\pypoetry\venv\Lib\site-packages\poetry\console\application.py:299 in configure_env
297│
298│ env_manager = EnvManager(poetry, io=io)
→ 299│ env = env_manager.create_venv()
300│
301│ if env.is_venv() and io.is_verbose():
5 ~\AppData\Roaming\pypoetry\venv\Lib\site-packages\poetry\utils\env\env_manager.py:514 in create_venv
512│ self._io.write_error_line(f"Trying {python_name}")
513│
→ 514│ python = self._full_python_path(python_name)
515│ if python is None:
516│ continue
4 ~\AppData\Roaming\pypoetry\venv\Lib\site-packages\poetry\utils\env\env_manager.py:69 in _full_python_path
67│
68│ try:
→ 69│ executable = subprocess.check_output(
70│ [path_python, "-c", "import sys; print(sys.executable)"], text=True
71│ ).strip()
3 ~\.pyenv\pyenv-win\versions\3.12.0\Lib\subprocess.py:466 in check_output
464│ kwargs['input'] = empty
465│
→ 466│ return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
467│ **kwargs).stdout
468│
2 ~\.pyenv\pyenv-win\versions\3.12.0\Lib\subprocess.py:548 in run
546│ kwargs['stderr'] = PIPE
547│
→ 548│ with Popen(*popenargs, **kwargs) as process:
549│ try:
550│ stdout, stderr = process.communicate(input, timeout=timeout)
1 ~\.pyenv\pyenv-win\versions\3.12.0\Lib\subprocess.py:1026 in __init__
1024│ encoding=encoding, errors=errors)
1025│
→ 1026│ self._execute_child(args, executable, preexec_fn, close_fds,
1027│ pass_fds, cwd, env,
1028│ startupinfo, creationflags, shell,
OSError
[WinError 193] %1 is not a valid Win32 application
at ~\.pyenv\pyenv-win\versions\3.12.0\Lib\subprocess.py:1538 in _execute_child
1534│ sys.audit("subprocess.Popen", executable, args, cwd, env)
1535│
1536│ # Start the process
1537│ try:
→ 1538│ hp, ht, pid, tid = _winapi.CreateProcess(executable, args,
1539│ # no special security
1540│ None, None,
1541│ int(not close_fds),
1542│ creationflags,
I have found a workaround if (having configured global in pyenv 3.11.6) execute:
poetry env use python.bat
Note that the extension .bat is added to the end of python
Creating virtualenv test in D:\Python\test\.venv
Using virtualenv: D:\Python\test\.venv
poetry env info
Virtualenv
Python: 3.11.6
Implementation: CPython
Path: D:\Python\test\.venv
Executable: D:\Python\test\.venv\Scripts\python.exe
Valid: True
System
Platform: win32
OS: nt
Python: 3.11.6
Path: C:\Users\**\.pyenv\pyenv-win\versions\3.11.6
Executable: C:\Users\**\.pyenv\pyenv-win\versions\3.11.6\python.exe
The location of python.bat and its contents are:
where python.bat
C:\Users\**\.pyenv\pyenv-win\shims\python.bat
Contents:
@echo off
chcp 1250 > NUL
call pyenv exec %~n0 %*
if I were you I would put some print statements in EnvManager._full_python_path() to see what it is doing. The windows error is strangely unhelpful (what is %1?)
perhaps that method should catch OSError?
Folks, "I am also hitting this" does not make any progress.
One of you who is having a problem will need to put in some work to debug eg https://github.com/python-poetry/poetry/issues/8229#issuecomment-1774626721
I was hitting this also, but to progress this along a bit ;) let me leave a bit more info:
Virtualenv
Python: 3.12.0
Implementation: CPython
Path: C:\Users\x\AppData\Local\pypoetry\Cache\virtualenvs\x-O5vkSaiN-py3.12
Executable: C:\Users\x\AppData\Local\pypoetry\Cache\virtualenvs\x-O5vkSaiN-py3.12\Scripts\python.exe
Valid: True
Base
Platform: win32
OS: nt
Python: 3.12.0
Path: C:\Users\x\.conda\envs\pipx
Executable: C:\Users\x\.conda\envs\pipx\python.exe
I was getting this cryptic [WinError 193] %1 is not a valid Win32 application. error in association with trying to switch the Python interpreter (poetry env use 3.10) to a version I know is installed but it seems poetry was struggling to find it. I solved it by first deleting the poetry environment (poetry env list and then poetry env remove x-O5vkSaiN-py3.12), then running poetry env use "C:\Users\x\.pyenv\pyenv-win\versions\3.10.11\python.exe" - i.e. using the full path. I had to delete the environment because I was running into an circular dependency catch-22 where it was refusing to let me change the version because I didn't have a valid version in my pyproject.toml - or maybe I misunderstood something, but either way deleting it before switching the python executable worked for me.
To the best of my knowledge, WinError 193 occurs when an attempt to execute a non-executable file is made, and given that my problem was resolved by more explicitly pointing it to a correct python.exe, I think this issue is from failing to resolve to the correct python interpreter. The %1 hints that the executable path/filename provided wasn't valid (first argument to spawn a process), so I imagine the error message occurred for the OP because the behavior virtualenvs.prefer-active-python enables fails to point to fill in a valid value for that argument.
I'd encourage everyone running into this issue to try find the python.exe they explicitly want to use and then using poetry env use "<path>\python.exe", rather than relying on any built-in python resolution mechanisms.
As an aside, it took me embarrassingly long to realize that I could use an absolute path for the python executable in 'env use'.
Description:
Activates or creates a new virtualenv for the current project.
Usage:
env use [options] [--] <python>
Arguments:
python The python executable to use.
Part of the confusion is because in documentation online values like 3.12 are valid values for the python argument but this doesn't map to any actual executable on my system, so I naturally assumed it was a more ambiguous definition of 'executable'. Could we perhaps change the documentation to e.g:
Description:
Activates or creates a new virtualenv for the current project.
Usage:
env use [options] [--] <python>
Arguments:
python The python executable to use. Accepts an absolute path, or a version string.
If version string is used, poetry will try but may fail to find the corresponding version.