PythonKit + Python-Apple-support Public可以在Debug上工作，但无法在发布或testFlight上工作

Using Swift
1

About my iOS_project:I used PythonKit and Python Apple support
And done：
set PythonPath:
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 made other configurations,include add Sign Python Binary Modules to Xcode： like the USAGE on Python Apple support。

It can work on debug run to my iPhone, I can call the methods in my custom Python file。
But can't work on release or TestFlight。
On release，It will not crash when code execution to set pythonPath and Py_Initialize()，But When I call Python methods，it crash on ：
PythonKit- PythonInterface- init-builtins = PythonObject(PyEval_GetBuiltins())
perhaps on PythonLibrary+Symbols：

  • Py_IncRef(pointer)*

Looks like a null pointer error，Because I saw a lot of 0x0000000000000000 in Xcode
example：sharedMethodDefinition UnsafeMutablePointer<PythonKit.PyMethodDef> 0x0000000000000000
Now I hope someone can help me fix it，It has been bothering me for two months now :exploding_head: :exploding_head: :exploding_head:

2

It worked when I set :
build Setting ->Enable Testability -> release -Yes

3

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。

4

IMO this issue is not related to Swift language itself.
It is recommended that you post the issue to the Apple Developer Forum or the Issue area of PythonKit repo.

5

Kyle wrote:

It is recommended that you post [to] the Issue area of PythonKit repo.

Agreed. I can explain what iOS is complaining about here, but for advice on how to fix it you’ll need to talk to someone with experience using PythonKit on iOS.

A .so file is typically some sort of Mach-O image, either MH_DYLIB or MH_BUNDLE depending on how it was built. iOS and its child platforms do not allow standalone Mach-O images. While you can break your app up into components, each component must be a framework placed in the MyApp.app/Frameworks directory. See Placing Content in a Bundle for the rules.

To get this to work you’ll either have to:

  • Statically link that code into your app or an existing framework, and then tweak the code that loads it, or

  • Wrap the .so into a framework, place it in MyApp.app/Frameworks, and then tweak the code that loads it.

How you’d do this is very specific to Python, hence my initial advice.

Share and Enjoy

Quinn “The Eskimo!” @ DTS @ Apple

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