PythonKit library not working after releasing it to testflight

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1

I have integrated pythonkit in my code to run some python code. It works perfectly, If I am running via Xcode.

But, when I uploaded it to testflight and trying to run the same code from testflight build, it is crashing with crash report having below details:

PythonKit/PythonLibrary.swift:59: Fatal error: 'try!' expression unexpectedly raised an error: Python library not found. Set the PYTHON_LIBRARY environment variable with the path to a Python library.

@pvieito Can you please help me about how to set PYTHON_LIBRARY env variable to make it working in release mode? Any help is appreciated.

2

See this sample project with explanations in the README.

3

@sspringer Thanks for reply.

I already had followed all of these steps. Its even working perfectly fine when I am running it via xcode(in debug mode). But its failing while running it on production/release mode. I dont know how to set the python library in release mode

4

It’s just setting an environment variable.

…But to be honest, when working with PythonKit I also experienced a fail on one machine without obvious reason, and it does not seem to be working on Windows, so we do not use PythonKit any more, which is a shame. Moreover the conversion of nested structures is a problem (e.g. converting an array of triples). PythonKit would need some stewardship and/or a more active community around it, it is a wonderful tool. The call of throwing functions should be more elegant.

5

I think I have encountered the same problem.
It can work on debug run to my iphone,but can't work on release or TestFlight.
Where the error occurred：
PythonKit- PythonInterface- init-builtins = PythonObject(PyEval_GetBuiltins())
on PythonLibrary+Symbols：

  • Py_IncRef(pointer)*

About my iOS_project:I used both PythonKit and Python Apple support
And did the following work:
guard let stdLibPath = Bundle.main.path(forResource: "python-stdlib", ofType: nil) else { return }
guard let stdDynloadPath = Bundle.main.path(forResource: "python-stdlib/lib-dynload", ofType: nil) else { return }
setenv("PYTHONHOME", stdLibPath, 1)
setenv("PYTHONPATH", "(stdLibPath):(stdDynloadPath)", 1)
Py_Initialize()

And add Sign Python Binary Modules to Xcode - taget - Build Phases like the USAGE on Python Apple support

Now I also hope someone can help solve this problem，It has been bothering me for two months now :exploding_head: :exploding_head: :exploding_head:，If you have already resolved it, please share your approach. Many thanks

6

I have same question,It work when I set:
Setting ->Enable Testability -> release -Yes
I'm not sure why. It's probably related to file read-write permissions?

But now it make a new question,
when I distribute on app store connect，show error：

Asset validation failed
Invalid bundle structure. The “xxxxxx.app/python-stdlib/lib-dynload/math.cpython-39-iphoneos.so” binary file is not permitted. Your app cannot contain standalone executables or libraries, other than a valid CFBundleExecutable of supported bundles. For details, visit: https://developer.apple.com/documentation/bundleresources/placing_content_in_a_bundle (ID: 74345377-b2bb-466b-bc4d-e3edb8a8f429)

Including all the files：
All the .io in python-stdlib/lib-dynload，and python-stdlib/config-3.10-iphoneos, python-stdlib/config-3.10-iphonesimulator.arm64 , python-stdlib/config-3.10-iphonesimulator.x86_64

I hope someone knows what's going on。

1 Like
7

This fixed it for me.