I'm attempting to access functions in pickits.dll (32bit .NET library) located in the same directory as the .py file.
The library is developed by Microchip for low-level access to some of their hardware through USB. The dll and documentation in pdf format can be downloaded here: https://www.microchip.com/en-us/development-tool/DV164122
Fruitlessly I have been spending the last 5 hours going through all the dll access options I have been able to find online. I have found proof that the library has been accessed through Labview, so I believe it should be possible...
However, I'm starting to doubt it's possible from Python.
I have tried ctypes, pydotnet and pythonnet, and now believe https://github.com/tr8dr/.Net-Bridge is the most promising to use, but I simply can't figure out how to use it. Something even better may exist, please let me know.
I've tried with Phyton 3.9.4 MSC v.1928 64 bit (AMD64) on win32, installed through PyCharm. (Note, I am using Win10/64)
Ideally, I need a simple step-by-step guide, covering:
What modules do I need to install, and how to install them correctly?
Example Python code.
Anything else that I might not yet know to ask about?
Thanks in advance.
Related
I've looked around (including StackOverflow) but can't really find something similar to my case so I'll just ask it here. I'm building an application with Python (it is currently a source code that I'm planning to turn into a Windows executable) and is using this library: https://github.com/xiph/rnnoise. It is not a Python package but a third-party library written primarily in C.
Since I have to install it into my computer in order to use the library inside my code, I want to ask if there is a way to include this library along with the executable so that anyone can just download and use it without having to set up the library? This is important since I can only set up the library on a Linux machine and the executable needs to work with the library platform-independently.
Update: Thanks to Vimalan E and Marat, I had a bit more clue on what I need to do. I was managed to locate the .so files of my required library after running make install on it. The question left is I don't know how to link it with an executable that will be made from my Python source code. For now, I want to include the library as a binary file along with my application (though I am not sure how to achieve that, maybe putting putting the .so near the .exe should do the trick).
Thank you.
I have tried portable python but the latest version is 3.2.5. (need 3.6+)
I cannot install libraries on it, even the get-pip.py doesn't work.
I'm trying to figure out how to make my project portable on windows systems that do not have python installed.
Also I want the minimum possible libraries(core python modules) to keep the project as lean as possible,
I would go with cx_Freeze - multiplatform module for freezing your Python script in a way that allows you to open it on other Windows machines even if they do not have Python installed. It got very nice and clear documentation also: http://cx-freeze.readthedocs.io/en/latest/ and works a bit better on Windows machines then alternative PyInstaller from my experience (which has interesting option of one-file-package, but in many cases leads to security warnings due to some dirty hacks used to obtain that feature).
However, it may not be enough if you are using some specific modules in your app, as for example matplotlib, dash, etc modules are very hard to pack correctly with Freezer.
I have found a solution to my own question after a couple of days.
I did not want to create an executable for my project but I wanted a portable python folder so that I can add libraries to it as and when I need.
The recent version of portable python is WinPython.
I had to delete some unnecessary files out of it though.
It's size is about 77 mb after extracting
https://winpython.github.io/
https://sourceforge.net/projects/winpython/files/WinPython_3.6/3.6.5.0/WinPython64-3.6.5.0Zero.exe/download
I am trying to install the sba's python wrapper (https://pypi.python.org/pypi/sba) on windows 10. Is there a simple, easy way to do this? This is my last resort, I just wish to know if someone has been able to figure it out. I know it is able to be done in linux and looking through the source files of the library it seems as if it can be done in windows, but no concrete documentation is presented.
Some of the instructions provided by the library's website and source text files say one has to download the original sba library, which is written in c, and compile it as a shared library, a dll library in windows. I have been trying to achieve this using cmake and visual studio 2015 without success.
If somebody has done this or has some insight in the problem I will be very grateful for it to provide the solution.
Thanks!
I've to ask 1 question about python and dll functions which I'm a bit frustrated about. The question is - Can I load dll functions from windows using python? I heard of Ctype to do that, but I can’t find good tutorials for this. Is there another way to use dll files from windows to get extra functionality?
I want to call some dll to work with mouse events. I used pyautogui but it is not that useful for me. I wonder if python is good for windows applications? I know it runs on Windows however there are good dll function that can provide better functionality for windows then python original libraries. Well that’s my opinion what I think. Anyways, is it worth to work with dlls with python after all? Or I better study C# for that because I love python for simplicity and don’t want to move to C# yet.
Yes you can. The ctypes library is indeed what you need. The official doc is here https://docs.python.org/3/library/ctypes.html .
Loading DLLs pretty straightforward, but calling the functions inside can be a pain depending on the arguments types. Handling old C style error return codes is also cumbersome compared to the exception handling and general low overhead code style in Python.
99% of the time it is way easier and better to use an appropriate existing module that either implements what you need or wraps the appropriate DLL for you. For example search in PyPI which is the central repository of Python expternal modules. That's my advice.
I'm trying to write my own media player (like Foobar), and I'm having trouble tracking down a Python library that'll play MP3s. I know Pymedia does mp3s, but it looks outdated - the latest installer is for Python version 2.4, and I'm using 2.6. I've never had much success with Pygame, and Pyglet doesn't look like it has too much in the way of documentation. Are there any other alternatives?
There is http://pyglet.org/ and also have you tried http://code.google.com/p/mp3play/? It's also available from PyPi (http://pypi.python.org/pypi/mp3play/) However, I think mp3play is Win32 only for now.
Looking at the updates, there were commits within last couple of months.
I've been using PyMedia in Python 2.6.5 on Windows successfully. Caveats: the documentation is bad and wrong -- many of the tutorials have glaring errors or otherwise don't work -- so I had to do some experimentation and Googling to get my code to work right. Also for whatever reason the maintainers seem to have stopped updating the project site 4 years ago, though they seem to be actively doing something.
I found installers here:
http://www.lfd.uci.edu/~gohlke/pythonlibs/
The semi-active forum linked from their website includes some code maintainers who are semi-helpful. I'm jboyd99 if anyone is looking for tips.
For reasons that are beyond me the focus is on car audio systems, despite the fact that it is a fairly fully featured library that does some things no other free Python library does, like read MP3s into raw PCM data. The library has some flaws -- I'll probably use PyAudio or PyAudiere for actual playback for better control of synchrony issues.
Maybe it'd be simpler to write that part of your application in Python 2.4 as a separate "backend". This way you could use PyMedia (http://pymedia.org/) (as you mentioned) for the actual playback. It'd allow you to write your GUI in another Python version (like 2.6), which would also mean more decoupling of program components and parallelism (smoother GUI).
If you target only the Windows platform, then using Media Player via COM might help:
http://www.daniweb.com/code/snippet216465.html