If you are having trouble with get_srs() when running locally, it might be your HOME env variable.

[laoluadewoye]

I have been studying EZKL for a few days and I love how easy it is to use. However, I ran into a wall when recreating the examples in PyCharm to understand them better.

I was able to copy and paste most of the code with tweaks only done for the organization. For the await uses I used the Asyncio Python library and some wrapper functions to handle them. However, the one I created for the-

res = await ezkl.get_srs(settings_path)

-line is not working. For reference, here is the wrapper function.

async def struct_ref_string(sp) -> bool: try: return await ezkl.get_srs(sp) except Exception as e: print(f"Error during SRS generation: {e}") return False

And here is how I call the function:

# Get an SRS file for cryptographical needs res = asyncio.run(struct_ref_string(settings_path)) assert res is True

To make sure my tweaks to the code weren't at fault, I ran the example in Colab and saw that it ran with no problem. I used the same libraries in the example Colab and my PyCharm environment and installed IPython to see if that would do anything as well. I also updated my local rust installation to the latest version, but I was still getting the same error-

Error during SRS generation: rust future panicked: unknown error thread 'tokio-runtime-worker' panicked at src\execute.rs:74:55: called Result::unwrap()on anErrvalue: NotPresent note: run withRUST_BACKTRACE=1 environment variable to display a backtrace Traceback (most recent call last): File "[Path to project]\Example.py", line 134, in <module> assert r is True ^^^^^^^^^ AssertionError

Am I using the method properly? Is there anything I should ensure I have in the settings file to make sure that it runs?

[laoluadewoye]

Note, the question was "Am I properly using the get_srs() method in Python?"

Update to the discussion: I figured out my problem and I want this discussion to stay up in case anyone else comes across this problem. I might rename my discussion too to make it more helpful.

Out of frustration I downloaded the command line version of the library and looked at the Rust code in my IDE. The panicking that keeps happening at src\execute.rs:74:55 leads you to this snippet of code (screenshotting because I am still learning how to do the syntax):

From what I understand, this part of the code uses the presumably set HOME variable to give the program a place to download the SRS information. Correct me if I'm wrong, please.

But the crux of the problem is that due to me never having to mess with environmental variables with any of my PyCharm projects, I never set a HOME variable, at least not one that my virtual Python environment can see and thus pass onto the compiled rust code. Thus, it "panicked" because it can't just assume a place to put stuff.

When I saw this snippet, I went back to a working version of the code I made in Jupyter Notebook and ran echo on the HOME variable to see what came up:

Sure enough, Colab has this set by default. In fact, I'm pretty sure all Linux distros have this set by default. Again, correct me if I'm wrong, please I don't want to come off wrong.

But for some reason, I didn't. So I experimented with it until biting the bullet and setting my Home variable to my user folder, and sure enough the code ran through without any issues. Next, I used a Python environmental variable with the same location, worked again. I then changed the location to be the folder that contained the code itself, and that worked as well.

The final part was to figure out a way to do this dynamically so I never have to worry about it ever again. Sure enough, the os library had the solution for this:

I use os to set the environmental variable, then run the method that contains a refined version of the example code all in one go. Asyncio is used since I don't automatically have an event loop. Finally, there is a comment to change my home variable back to what it ought to be honestly, in case I am messing with something I shouldn't just leave alone.

So if you are having problems with the get_srs function when trying to run your code on your Windows machine and it just says something's panicking on line 74 (or 500-something), check your HOME variable. It might not solve your problem, but it did for me and now I can do stuff in PyCharm!

Shoutout to the author for making such readable Rust code. I haven't learned Rust yet so I didn't get some of it, but your syntax went a long way to me figuring this out.