Problem with package: lxml

marceloalencar commented 7 months ago

Package name

lxml

Package version

4.9.3

PyPI URL

https://pypi.org/project/lxml/

piwheels URL

https://www.piwheels.org/project/lxml/

Python version

[ ] Python 3.7
[ ] Python 3.9
[X] Python 3.11

I am aware this is the issue tracker for a Python package index specifically for Raspberry Pi

[x] Yes

I have checked for duplicate issues

[X] Yes

I am the maintainer

[ ] Yes

More information

On Python 3.11 (bookworm), trying to import etree returns an error:

Python 3.11.6 (main, Nov  1 2023, 09:03:26) [GCC 12.2.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> from lxml import etree
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: cannot import name 'etree' from 'lxml' (/usr/local/lib/python3.11/site-packages/lxml/__init__.py)

On Python 3.9 (bullseye) everything works as expected:

Python 3.9.2 (default, Mar 12 2021, 04:06:34)
[GCC 10.2.1 20210110] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> from lxml import etree
>>> print(etree)
<module 'lxml.etree' from '/home/user/teste/lib/python3.9/site-packages/lxml/etree.cpython-39-arm-linux-gnueabihf.so'>

Tests were conducted on a Raspberry Pi 1 Model B, under Raspberry Pi OS.

bennuttall commented 7 months ago

The project page shows the package's apt dependencies: https://www.piwheels.org/project/lxml/

For the cp311 build, the wheel depends on extra libraries:

sudo apt install libxslt1.1 libstdc++6 libicu72 libxml2 libgcrypt20

marceloalencar commented 7 months ago

Exactly. It still didn't work.

marceloalencar commented 7 months ago

Verbose output:

Python 3.11.6 (main, Nov  1 2023, 09:03:26) [GCC 12.2.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> from lxml import etree
[...]
# /usr/local/lib/python3.11/site-packages/lxml/__pycache__/__init__.cpython-311.pyc matches /usr/local/lib/python3.11/site-packages/lxml/__init__.py
# code object from '/usr/local/lib/python3.11/site-packages/lxml/__pycache__/__init__.cpython-311.pyc'
import 'lxml' # <_frozen_importlib_external.SourceFileLoader object at 0xb6714c90>
# trying /usr/local/lib/python3.11/site-packages/lxml/etree.cpython-311-arm-linux-gnueabi.so
# trying /usr/local/lib/python3.11/site-packages/lxml/etree.abi3.so
# trying /usr/local/lib/python3.11/site-packages/lxml/etree.so
# trying /usr/local/lib/python3.11/site-packages/lxml/etree.py
# trying /usr/local/lib/python3.11/site-packages/lxml/etree.pyc
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: cannot import name 'etree' from 'lxml' (/usr/local/lib/python3.11/site-packages/lxml/__init__.py)

Directory listing:

root@4a72c1b8f220:/# ls -la /usr/local/lib/python3.11/site-packages/lxml/etree*
-rwxr-xr-x 1 root root 9669656 Nov 11 15:11 /usr/local/lib/python3.11/site-packages/lxml/etree.cpython-311-arm-linux-gnueabihf.so
-rw-r--r-- 1 root root    8575 Nov 11 15:11 /usr/local/lib/python3.11/site-packages/lxml/etree.h
-rw-r--r-- 1 root root  132415 Nov 11 15:11 /usr/local/lib/python3.11/site-packages/lxml/etree.pyx
-rw-r--r-- 1 root root   17851 Nov 11 15:11 /usr/local/lib/python3.11/site-packages/lxml/etree_api.h

marceloalencar commented 7 months ago

I realized this is a problem in the python:3.11-slim-bullseye docker image, as it's provided only as armel.

It works on the host machine (armhf):

Python 3.11.2 (main, Mar 13 2023, 12:18:29) [GCC 12.2.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> from lxml import etree
>>> print(etree)
<module 'lxml.etree' from '/home/user/teste/lib/python3.11/site-packages/lxml/etree.cpython-311-arm-linux-gnueabihf.so'>

bennuttall commented 7 months ago

We build for armhf only, as per the homepage:

Wheels provided support all Raspberry Pi models (as of October 2023). Our wheels are only supported under 32-bit (armhf) Raspberry Pi OS

piwheels / packages