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boostorg / python

Boost.org python module
http://boostorg.github.io/python
Boost Software License 1.0
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Cannot import Boost.Python from Python 3.11 #436

Open debemdeboas opened 4 months ago

debemdeboas commented 4 months ago

Hi all, I'm trying to import Boost.Python from Python 3.11 and I'm getting a ModuleNotFoundError: I'm using Boost 1.82.0 on Ubuntu x86_64.

>>> import Boost.Python
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ModuleNotFoundError: No module named 'Boost'

I've built Boost.Python using the following bootstrap/b2 commands:

$ ./bootstrap.sh --with-python-version=3.11 --with-libraries=python
$ ./b2 -j$(nproc) --with-python install

I have also tried --with-python=/usr/bin/python3.11 on bootstrap but that also doesn't seem to work. I have tried setting LD_LIBRARY_PATH to /usr/local/lib as well (where I installed Boost.Python) but that also didn't do the trick (I ran ldconfig and ldconfig -n /usr/local/lib too).

Can anyone give us a hand?

stefanseefeld commented 4 months ago

Boost.Python isn't a Python module you can import. It's a library you can use from your C++ project to build Python extension modules. See e.g. http://boostorg.github.io/python/doc/html/tutorial/tutorial/hello.html

debemdeboas commented 4 months ago

That's what I gathered from the documentation as well, but some of the team are adamant that they used to import Boost.Python in the past in .pyi files, like so:

import Boost.Python

class Foo(Boost.Python.Instance):
    ...
stefanseefeld commented 4 months ago

They are mistaken...

debemdeboas commented 4 months ago

Ah, well. Thank you. In that case, I'll talk to them and see where these .pyi files came from. There may be a possibility that they were directly translated from C code without care.