I'm trying to run a face detection model in Unity. It gets input from the webcam, then spits out a face. But trying to make this work with C# has been an absolute nightmare. And despite all my suffering, I still haven't been able to make it work!
If I could use python, I'd be able to get it done easily. So, obviously, I want to find a way to get a python script working in Unity. But IronPython is the only thing I've been able to find, and it's outdated.
I need either knowledge of how to make IronPython work in spite of being outdated, or some other method. Please.
Unfortunately, Unity at this time does not support Python. Although, there is an asset that you can use a bit of Python with. I am not sure what you can do with this asset but I know it could help a minimal amount:https://assetstore.unity.com/packages/tools/integration/python-interpreter-645
Quick Note: Most programming languages work about the same way. If you figure out the documentation and grammar/punctuation for C#/UnityC#, you should be off just fine.
I try to use python once on Unity and I found a few ways:
There is a package call "IronPython" where you can add a python file to your unity project and then call a function from C# to your python code, to do that you should follow this:
We already know that we can use python to use .net internal calls.
Now we may use the same to start a console that can accept a scripting language in Unity engine.
To do this we have to include certain dll files.
These dll files must be present in Assets>plugins
IronPython.dll
IronPython.Modules.dll
Microsoft.Scripting.Core.dll
Microsoft.Scripting.dll
Microsoft.Scripting.Debugging.dll
Microsoft.Scripting.ExtensionAttribute.dll
Microsoft.Dynamic.dll
Once the Plugins are in place.
Initiate the Cs code
PythonEngine engine = new PythonEngine();
engine.LoadAssembly(Assembly.GetAssembly(typeof(GameObject)));
engine.ExecuteFile("Test.py");
Where test.py is the python code.
Initiate python side:
import UnityEngine from UnityEngine
import *
Debug.Log("Hello world from IronPython!")
References:
https://github.com/cesardeazevedo/Unity3D-Python-Editor
http://techartsurvival.blogspot.in/2013/12/embedding-ironpython-in-unity-tech-art.html
IronPython in Unity3D
the issue with this way is that most of the python module are not supported.
2.the second way is to create a file like json that contain the data you want to send to the json and then create an output json that send the output from the python script, this way is very limited with what you can send because the data must be contain in your json.
the last way that work for me is to install the Nuget package and copy the script from python to c# line by line with the relevent module installed in Unity and it's work for me, but copy a long code can take time.
this is a reference to the package:
https://github.com/GlitchEnzo/NuGetForUnity
and then to install the relevent package you should press on NuGet → Manage NuGet Packages and the choose the relevent package(for me it was Numpy and it work grate).
hope it will help you
I don't know how recent it is but there is a Unity package for python available on unity 2019.3 and further versions.
Warning the first versions of this package can't use Python3.
You can see more for yourself by the following link.
https://docs.unity3d.com/Packages/com.unity.scripting.python#2.0/manual/index.html
I hope this may help you.
We are thrilled to announce that Python for Unity 4.0.0-exp.5 is now available!
4.0.0-exp.5 is a major upgrade from our last public release, and incorporates a large number of changes. In summary:
Based on Python 3.7; scripts based on Python 2.7 will need to be ported.
Users no longer need to install Python on their system.
In-process Python is no longer reinitialized when the Unity domain reloads.
Removed the out-of-process API. The PySide example now runs in-process and is much simpler.
Limited support for a virtual environment workflow via the ProjectSettings/requirements.txt file.
Many bug fixes.
Documentation for the Python for Unity package is available here, and the full changelog can be found here.
This is an experimental release, and thus is not visible in Package Manager. To install this package, open Package Manager, click the + at the top left and select Add package by name.... Enter com.unity.scripting.python as the name and and 4.0.0-exp.5 as the version and click Add. Alternatively, you may edit Packages/manifest.json and add "com.unity.scripting.python": "4.0.0-exp.5", to the list of dependencies, or edit the existing entry for Python for Unity to update the version.
Soursce: https://forum.unity.com/threads/python-for-unity-release-announcements.1084688/
Documentation: https://docs.unity3d.com/Packages/com.unity.scripting.python#4.0/manual/index.html
Unity not supported python, But you Can write Python Code and run it by Socket programing, Create Server with python and send data,in C# Connect to server and use data sended with python.
Related
I am brand new to FreeCAD and fairly new to python in general.
I have a project going on in which I have a list of several hundred (x,y) coordinates stored in two columns in an Excel doc. These points define a slice of an elevation profile. What I'm needing to do is draw a line/shape in FreeCAD using these points that can then be extruded into an extended version of this shape. Since the data is currently in excel, I'm leaning towards using pandas to access it, but I'm open to other ideas.
The problem I'm having with this line of thinking so far is that I can't figure out a way to access pandas from inside FreeCAD, so I've been attempting to use Winpython(2.7.10) through the Spyder ide to import FreeCAD(0.16) and pandas into the same script. I've tried adding both the Freecad/bin and Freecad/lib folders to my path (using this recommended method https://www.freecadweb.org/wiki/Embedding_FreeCAD/en), but have yet to have any success importing.
The error is: "DLL load failed: The specified procedure could not be found." .... Searching around, I can't seem to find FreeCad.dll or FreeCAD.so anywhere in my install, yet FreeCAD runs normally when used independently.
To summarize: Wanting to run FreeCAD through an external python console in order to access excel data through pandas (which doesn't seem to be available within FreeCAD itself). In doing so, I get an error and FreeCAD isn't accessible. It might be a version compatibility issue, or something more complex.
If you made it here, thank you for taking the time to read through my fairly complex/niche problem. Please feel free to suggest any more elegant alternatives, as I said, I'm new to this and likely haven't come across all possible solutions.
Thank you
I'm not exactly certain what "pandas" is - a quick search didn't reveal anything except the game engine Panda3D and the animal itself...
As for accessing data external to FreeCAD, this is something I've been exploring myself lately. At the moment, some success has been achieved by starting FreeCAD in server mode and having it watch an excel file, then running python script when it changes.
This approach would allow you to parse an Excel file using commonly available python libraries for that purpose.
EDIT:
Having been informed on just what pandas is, it seems odd you can't make it work with FreeCAD. However, there could be a number of causes:
Old version. FreeCAD is undergoing really significant change right now. Ensure you're using the latest stable release (0.17 - Roland), but I'd recommend getting your hands on the latest 0.18-dev release
Incorrect python version - FreeCAD currently is built on Py2, though Py3 builds are possible (I run FreeCAD / Py3 on my linux machine). Ensure you've installed pandas appropriately to match the python version FreeCAD depends upon (Py2, most likely).
Invalid install - If you know pandas imports and works in the python interpreter itself, try importing and running pandas code from the FreeCAD python console.
I would like to be able to use the services that the Blockcypher module provides for my programme, however i have (at least i think) downloaded the correct module package but cant get it to integrate with my Python on my Computer. I am fairly new to python so I have no idea on where to even start tackling this problem.
Modules, regardless of where you've got hold of them, will be searched for in the sys.path. If nothing is found there, they will be looked up in the current directory.
When you download some code directly it will be a good first guess to place it in the directory of the script from where you are using the download. If it's just a .py-file, place it there. If it's an archive with a directory, then place the directory there (not the files).
Generally, you should prefer installing modules via a package manager such as pip or conda. Such package managers take care of placing modules properly for usage with your Python installation from wherever you will write your script. They also provide support for updating these modules to newer versions later.
Update: If you cannot make anything from this remarks, you should first read the section on modules in the Python tutorial, or even work thru the full tutorial or thru a good book (or any other ;) to get a smooth entry into the friendly world of Python programming.
Update (2023): The Dive Into Python link above is outdated, so here is the updated link to this great resource:
https://diveintopython3.problemsolving.io
I think it's still the best beginner's resource, but, well, here are many more:
https://wiki.python.org/moin/IntroductoryBooks
I need an editor with python built into it. Currently I use blender so I do not have install python. Blender comes with the python32.dll to use python. is there another editor out there that I can execute python commands without it being installed?
I don't understand the question fully either. Why NOT install python? But if the question is how to be able to edit and run python on machines without installing it, there's Movable Python (http://www.voidspace.org.uk/python/movpy/) with a small fee to purchase and Portable Python (http://www.portablepython.com/wiki/About), free, donation requested. I've used Movable Python and can vouch for it. I've never tried Portable Python.
ViennaMike referenced Movable Python which has a small fee, after I had asked the question, I did more searching and found movable python about the same time he suggested it. I seems to find something different.
http://code.google.com/p/movable-python/
this seems to be a free version of movable python. This is only the IDLE portion of python, but can be used to run *.py files. It is considerably smaller than a normal python installation, and comes in a zip file.
Several people asked about my ability to install an editor but not python. At my High school (I work with the IT dept as one of my classes) I find python helps a lot with some tasks. I am unable to install python due to admin rights (which I will have next year) so anytime I did install python, because of its size on the Network drive, it would be automatically deleted.
Thank you ViennaMike again for finding movable python, unfortunately, it only works with python 2.5, so I may see if there is a way I can get that to 3.2
Recently I have become a fan of storing various settings used for my testing scripts in the OSX defaults system as it allows me to keep various scripts in git and push them to github without worrying about leaving passwords/settings/etc hardcoded into the script.
When writing a shell script using simple bash commands, it is easy enough to use backticks to call the defaults binary to read the preferences and if there is an error reading the preference, the script stops execution and you can see the error and fix it. When I try to do a similar thing in Python or Ruby it tends to be a little more annoying since you have to do additional work to check the return code of defaults to see if there is an error.
I have been attempting to search via google off and on for a library to use the OSX defaults system which ends up being somewhat difficult when "defaults" is part of your query string.
I thought of trying to read the plist files directly but it seems like the plist libraries I have found (such as the built in python one) are only able to read the XML ones (not the binary ones) which is a problem if I ever set anything with the defaults program since it will convert it back to a binary plist.
Recently while trying another search for a Python library I changed the search terms to something using something like NSUserDefaults (I have now forgotten the exact term) I found a Python library called userdefaults but it was developed for an older version of OSX (10.2) with an older version of Python (2.3) and I have not had much luck in getting it to compile on OSX 10.6 and Python 2.6
Ideally I would like to find a library that would make it easy to read from (and as a bonus write to) the OSX defaults system in a way similar to the following python psudo code.
from some.library.defaults import defaults
settings = defaults('com.example.app')
print settings['setting_key']
Since I am also starting to use Ruby more, I would also like to find a Ruby library with similar functionality.
It may be that I have to eventually just 'give up' and write my own simple library around the defaults binary but I thought it wouldn't hurt to try to query others to see if there was an existing solution.
You´ll want to use PyObjC: have a look at this article at mactech.com (in specific: scroll down to "Accessing plists Via Python"). And this article from oreilly on PyObjC.
Run this, for example:
from Foundation import *
standardUserDefaults = NSUserDefaults.standardUserDefaults()
persistentDomains = standardUserDefaults.persistentDomainNames()
persistentDomains.objectAtIndex_(14)
aDomain = standardUserDefaults.persistentDomainForName_(persistentDomains[14])
aDomain.keys()
I used cpython api to load py from C/C++.
But, if i want not setup cpython in client, can I take package dll of cpython in my program?
How to do that?
Installer-builders like PyInstaller (cross-platform) and py2exe (Windows only) basically do that job for you in a general way, except that the executable at the heart of the produced package is their own instead of yours.
But basically, you can imitate their behavior in terms of setting up a .zip file with all the Python library modules you need (or just zip up everything in the standard python library if you want to allow python code running form your app to import anything from there), and follow the simple advice in the Embedding Python in Another Application section of the Python docs.
Note that embedding Python equals extending Python plus a little bit of code to initialize and finalize the interpreter itself and a little bit of packaging as I just mentioned; if you've never writted Python extensions I would suggest practicing that first since it's the most substantial part of the task (not all that hard with helpers such as boost python, but more work if you choose to do it as the "bare C" level instead).
You don't need to setup Python to embed it in applications. The core of the Python interpreter is available as a shared library which you can dynamically load in your application and distribute with it.
Read on embedding Python in the official docs. Also, this article seems nice and comprehensive for Linux. For Windows, read the notes here.
Here's another SO question that discusses this issue.
The Python license is probably hard to understand for a non-lawyer, non-native English speaker. So yes, you can redistribute the unmodified DLL as it contains the copyright notice within it.
It would be polite to give credit like "This program contains the Python Language Interpreter version X.XX http://python.org for more information" or similar somewhere in the program or documentation.