[RESOLVED]Error with from astropy.convolution import Gaussian1DKernel

[jglorian]

When I try to run the program packaged with pyinstaller with the code below,
I have

Traceback (most recent call last):
File "astropy/convolution/convolve.py", line 24, in
File "numpy/ctypeslib.py", line 127, in load_library
ModuleNotFoundError: No module named 'numpy.distutils'

During handling of the above exception, another exception occurred:

Traceback (most recent ## Description of the issuecall last):
File "main.py", line 6, in
from astropy.convolution import Gaussian1DKernel
File "PyInstaller/loader/pyimod03_importers.py", line 540, in exec_module
File "astropy/convolution/init.py", line 8, in
File "PyInstaller/loader/pyimod03_importers.py", line 540, in exec_module
File "astropy/convolution/convolve.py", line 26, in
ImportError: Convolution C extension is missing. Try re-building astropy.
[11847] Failed to execute script main

I have done this with python3.7, under Ubuntu and with the last version of all the libraries.
I also try with different versions of python and libraries but I have still the same problem
Can you help me ?

import matplotlib.pyplot as plt
from astropy.convolution import Gaussian1DKernel

if __name__ == '__main__':
    gauss_1D_kernel = Gaussian1DKernel(10)
    plt.plot(gauss_1D_kernel, drawstyle='steps')
    plt.xlabel('x [pixels]')
    plt.ylabel('value')
    plt.show()

[rokm]

You'll need to add numpy.distutils (and several submodules from it) to hiddenimports. On PyInstaller 4.3, the easiest way to do so is adding --collect-submodules numpy.distutils to your pyinstaller command line.

[rokm]

Hmm, this actually looks like a bug in our numpy hook - it explicitly excludes numpy.distutils (which is why as an above work-around, its collection needs to be forced manually).

[bwoodsend]

Yes. I deliberately excluded that because it was said in numpy/numpy#17184 (comment) that is was unlikely to be useful (and tbh I can't understand why astropy would need it).

[bwoodsend]

I'd rather that the odd library which does somehow depend on numpy.distutils should --hiddenimport it in rather that change to numpy hook to include it by default.

[rokm]

It's not astropy's fault, though - at least not directly. It's numpy.ctypeslib.load_library (that astropy uses to load its private extensions) that imports numpy.distutils. But I suppose using numpy's convenience function instead of using ctypes directly might fall under the same argument...

[bwoodsend]

Grrr. I really like NumPy but I seriously wish it would separate its public API from its guts from its test suite from its build system...

I guess that we'll have to remove that exclusion then.

[jglorian]

Solved with

pyinstaller --onefile --collect-submodules numpy.distutils main.py

Thank you !

[bwoodsend]

I'm going to keep this open as it needs to be addressed in the numpy hook.