Why does python sounddevice returns nothing? - python

I'm using wsl version 2 and Xlaunch to connect with x11 server. The problem is when I'm running this code:
import sounddevice as sd
print(sd.query_devices())
It returns nothing or even running $python3 -m sounddevice ,again returns nothing. what can be the problem?

You mention setting up Xlaunch (VcXsrv), but this only provides graphical support, not audio. PulseAudio is typically used to provide a connection between the Linux code running in WSL and the Windows audio source.
While you can configure PulseAudio manually, I would recommend simply using the WSLg feature of WSL2, since it's now available for both Windows 10 and 11 users. WSLg should automatically configure PulseAudio for you with no additional effort.
See this Ask Ubuntu answer where I cover how to upgrade your system (hopefully) to the latest Windows release and then upgrade WSL to use the 1.0.0 (or later) application package that includes this support.

Related

SpeechRecognition sr.microphone command triggers windows installer

I'm trying to use Python's speechrecognition library and have successfully installed the required components. However, when executing my code (see picture) the sr.Microphone command triggers an install window. This happens for whichever microphone I set as default (look snippets). Does anyone have any suggestions?
mic channels code + windows prompt
In the meantime I've been able to use "listen()" correctly. I'm not really sure how I solved it but I did the following since last time:
Downgrade from Python 3.7 to python 3.6
Install ffmpeg
(I'm on Windows 10 btw)

0x80070643 error while installing Python 3.6

I'm actually using Python for an audio steganography project but I have some troubles.
I searched this error code on the forum, but I found things about SQL installations and not Python.
I'm trying to re-install Python 3.6.5 after an uninstall, because of a bug with pip.
I installed Python 2.7, Python 3.6.5, Python with VS 2017, before uninstall it because it wasn't working.
However, when I'm runing the installer as an administrator, hit "customize installation", tick everything excpet "balblalblabal (this requires VS 2015 or later)", and click on "install", it tells me that :
.
I realy need Python to work and I'm now stuck ...
If anybody here could help me, it would be nice !
Thanks all,
maleik.
PS : I have the log for you :*
The log link
I found this in the log file which you have attached. Try cleaning the registry with CC cleaner and give it a try. If it still doesn't work, try installing python with web installer Python Web Installed 3.6.5.
[3DA0:2968][2018-12-05T20:46:18]e000: Error 0x80070643: Failed to install MSI package.
[3DA0:2968][2018-12-05T20:46:18]e000: Error 0x80070643: Failed to execute MSI package.
[2610:03A4][2018-12-05T20:46:18]e000: Error 0x80070643: Failed to configure per-machine MSI package.
[2610:03A4][2018-12-05T20:46:18]i319: Applied execute package: core_AllUsers, result: 0x80070643, restart: None
[2610:03A4][2018-12-05T20:46:18]e000: Error 0x80070643: Failed to execute MSI package
I installed python from Microsoft store after facing this problem and it magically got installed without any error as it may have directly been installed. I don't know but try if it eorks for you too.
You need to run the installation as a local administrator.
I had the same problem installing Python version 3.9 for the first time on my Windows 10, as this same problem happens to many users trying to install Python, the best solution I accidentally, just like #MANAN AGGARWAL discovered trying to check if I already had a version of Python installed on my computer by the DOS Command Prompt, was:
Open the DOS Command Prompt (cmd) and dictate "python": if a screen shows you a version, it's clearly not the first time you've installed Python, so if you want to upgrade you should try: https: / /www.delftstack.com/en/howto/python/how-to-update-python/ But if you've never installed any version of Python, the solution lies in updating your operating system to the latest version through Windows Update, and open the command prompt and type Python, or go directly to the Microsoft Store and search for Python followed by its latest version. It works without error.
** If by chance it does not automatically install on your PC after downloading, click "install on my devices" and select your computer name.
Why can't I install Python directly from the website file? Please note that when trying to install any software/applications from outside Microsoft's trusted locations, there are high chances of user settings interfering with the installation. When coming, for example, from the Microsoft Store, a chance of success is much greater, even without having problems related to User Permission Settings.
Another important thing to point out here is that installing a lot of software from outside Microsoft's trusted platforms can cause you to change some user permissions which can have positive effects with some software and negative effects with others, even with security your own system if you don't know what you're doing.
it's simple , Try Lower Version Like 'Python 3.6' but Download web install.
install it , then install last python version.
your python will update.
I've faced same/similar problem with installing Python 3.9.12 in a clean Windows 8.1 64-bit (VirtualBoxed test environment).
I thought the issue could have been fixed in a newer version of Python, but the freshest 3.10.10 fails with same issue.
The original log isn't available any longer, but luckily it is quoted in another answer, and the following line reveals the real problem:
Applied execute package: core_AllUsers, result: 0x80070643, restart: None
My log looks the same, and if you scroll the log up, you'll discover that core_AllUsers is a UCRT MSI-installer, which is downloaded from Python site (for 3.10.10 64-bit the link may look like https://www.python.org/ftp/python/3.10.10/amd64/ucrt.msi).
If you download it manually (Python installer is smart enough to do a cleanup even if it fails, so you won't find this MSI in a local cache) and run, it will probably crash. And if it is your case, I have a simple solution - just install update KB2999226 (Update for Universal C Runtime) for your OS, which you can download from Microsoft.
I also faced the similar issue. What the trick worked for me is I installed it for the individual user (as earlier installation was for the all users).
So earlier if one has installed it for the all users then install it for the specific user and vice versa.
I know this is not the resolution of the error faced. However, this approach will install Python which is the main motive to achieve.
I encountered the same issue after installing a fresh Windows 8.1 on my PC.
I solved that by using the Python v3.9 web installation file which you can find here.
However, you can choose any other version that has a web installation file
Note: You need internet connection to use this method.

Python 2.7.14--- importing vlc module on mac OS

in the last couple of days I was developing an APP on python IDLE.
I tried to import the vlc module, when I run it I get this error:
OSError: dlopen(libvlccore.dylib, 6): image not found
I installed the module with this command: pip install python-vlc.
I hope you can help me getting it work!
Thanks in advance!
Zaid Zaim
python-vlc is just Python bindings for libVLC.
Without that library, it won't do you any good, because all it does is try to load that library (a .dylib, .so, or .dll, depending on your platform) and call functions out of it.
There should be installation instructions at the wiki page linked above, but on a Mac, the easiest way is to just install the VLC player. I know that if you install it with Homebrew, you get the library, in a location that python-vlc can find. But I think even the binary installer from the front page of the main VideoLAN website will work as well.
If you're using Homebrew, you'll want to read the docs for when to search brew vs. brew cask vs. other taps,1 or search somewhere like Mac App Store for the current status. But at present, the appropriate command appears to be:
brew cask install vlc
1. Generally, anything that you'd expect to find as a double-clickable app in /Applications, as opposed to a Unix command-line tool or a support library, is going to be a cask, and therefore in the tap cask, which has special shortcuts to access it. But that's a relatively new thing, and not every recipe has been converted yet.
brew install --cask vlc
Is the latest command, and it works for me!

Cannot get python IDLE 2.7, 3.3 to run - OS X

I am running a MacBook Pro with 8gb of memory and a 2.5GHz processor. I run OS X Mavericks, but this problem has happened on other operating systems as well. when I try to open the editor, or even open a python file, this happens:
This has been a problem since I got into python. I have tried as many versions as I can, and the same screen pops up. Please help
I recently also upgraded a friends iMac to OS X 10.9 Mavericks and her Python to 2.7.6. If you mount the python-2.7.6-macosx10.6.dmg disk image there's a text file named ReadMe.txt. If you ahem, actually read it, right near the beginning it says:
**** IMPORTANT ****
Update your version of Tcl/Tk to use IDLE or other Tk applications
To use IDLE or other programs that use the Tkinter graphical user
interface toolkit, you may need to install a newer third-party version
of the Tcl/Tk frameworks. Visit
http://www.python.org/download/mac/tcltk/ for current information
about supported and recommended versions of Tcl/Tk for this version of
Python and of Mac OS X.
Here's what http://www.python.org/download/mac/tcltk currently looks like (my highlighting):
To summarize: You need to download and install ActiveTcl 8.5.15.1 (which is mislabeled ActiveTcl 8.5.15.0) from ActiveState's webpage. After doing that you should be able to run IDLE:
I haven't actually tried to do it yet, but from what I read it sounds like the same process applies to Python 3.3.3 and its IDLE app.
I was having the exact same problem.
I was finally able to install Python (and IDLE) via MacPorts by also installing a package called "pyXX-tkinter" -- where XX is the version, e.g. py34-tkinter for Python 3.4.

Is it possible to write a windows service using Python?

Python has a win32service package that seems to allow windows service creation. I have carefully checked available google examples, for example this one:
Is it possible to run a Python script as a service in Windows? If possible, how?
I have placed code into ~/Documents/test.py and executed following under elevated command prompt:
> python test.py install
> python test.py debug
Unfortunately, every example i tried fails with error:
Debugging service TestService - press Ctrl+C to stop.
Error 0xC0000005 - Python could find the service class in the module
AttributeError: 'module' object has no attribute 'AppServerSvc'
(null): (null)
I have tested it with latest version of ActivePython (2.7.2.5 32-bit) on Windows 7 64-bit and Windows 8 64-bit. Of course, if service is started maually via service manager, it will not start either.
Am i doing something wrong or Python is not intended to be used for service creation on modern operating systems? Maybe i need a specific version of windows/python/pywin32? Of course, i can manually test all combinations starting from windows XP but it will take lots of time :(. Maybe someone already has experience with Python and windows services and can hint me what i'm doing wrong?
update
Tested on Windows XP 32-bit virtual macine (same code, same activepython distribution) - same error.
It appears that there is a bug in the ActiveState build for PyWin32. Installing ActiveState python 2.7.2.5 and running the linked sample code above, I get the same error that you are reporting.
But if I download Python 2.7.3 (2.7.2.5 does not seem to be available for download) and add PyWin32 build 214 (ActiveState seems to be using the 214 version of PyWin32). Then everything seems to work just fine. I also tried the latest build of PyWin32 (218) and it also worked correctly.
So I guess you can try reporting the problem to ActiveState (I don't have a support contract with them) and unless you have a requirement for using ActiveState, you can just switch to the standard Python builds.
I have been using services with the standard Python builds for years running on everything from Windows 2000 up to Server 2008 and Windows 7 with no problems. So I have good reason to believe that it will work for you also.
If you want to work with ActiveState to get the problem fixed, then the bug appears to be in their build of PythonService.cpp in the LoadPythonServiceInstance function. I looked at the registry entries that were created and they look fine, it is the PythonService.exe that is failing at loading your class. Based on the error message it appears to have loaded the module correctly and is just having trouble finding the class.

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