Nose is not compatible with Python version 3.10 about hyperon-experimental HOT 17 CLOSED

I personally use Python 3.10.4 with Nosetests 1.3.7 and it works. I don't see the hyperon code in the stack trace you posted, so I think it is probably some compatibility issue between Python and Nosetests which are installed on your system. The possible root cause is CMake finds incorrect version of Python or Nosetests somewhere in the system.

Could you please check paths to your executable files, to do this run the following command in ./build directory:

cmake --system-information  | grep EXECUTABLE | egrep 'NOSE|PYTHON'

from hyperon-experimental.

I have multiple python versions in my system and CMake keeps getting the older one and was unable to find hyperonpy module. So I created a virtual environment with Python 3.10 and that's what I used to build hyperon.

The output of the above command

NOSETESTS_EXECUTABLE:FILEPATH=/home/hedra/SNET/hyperon-experimental/venv/bin/nosetests
PYTHON_EXECUTABLE:FILEPATH=/home/hedra/SNET/hyperon-experimental/venv/bin/python
//ADVANCED property for variable: PYTHON_EXECUTABLE
PYTHON_EXECUTABLE-ADVANCED:INTERNAL=1

Python and Nosetests versions in the venv

(venv) build $nosetests --version
nosetests version 1.3.7
(venv) build $python --version
Python 3.10.4
(venv) build $

from hyperon-experimental.

Versions are definitely ok, and CMake finds tools right. I did't know nose is outdated and replaced by nose2. I found nice analysis of the issue here: nose-devs/nose#1099.

I am not sure why python -m pip install -e ./python[dev] works to me and others but doesn't work in your environment but it seems that PyPi version of nose is broken and should be built from sources to be compatible with Python 3.10. I can suggest trying pip install -U nose --no-binary :all: to rebuild nose from source as mentioned here as a workaround. Please write back if it work or not.

As a long term solution it is probably better to migrate to pytest or nose2. @noskill do you have any preferences here?

from hyperon-experimental.

The installation python -m pip install -e ./python[dev] works for me as well.

I only got the above AttributeError: module 'collections' has no attribute 'Callable' error during cmake build specifically when I do make check.

The suggestion to rebuild nose doesn't seem to update anything, this what I get when I try:

(venv) hyperon-experimental $pip install -U nose --no-binary :all:
Requirement already satisfied: nose in ./venv/lib/python3.10/site-packages (1.3.7)

from hyperon-experimental.

Try this one, to force reinstall package:

pip install -U --force-reinstall  nose --no-binary :all:

from hyperon-experimental.

The force reinstall fixes the collections error. But got another error with the print statement

    from nose import main
  File "/home/hedra/SNET/hyperon-experimental/venv/lib/python3.10/site-packages/nose/__init__.py", line 1, in <module>
    from nose.core import collector, main, run, run_exit, runmodule
  File "/home/hedra/SNET/hyperon-experimental/venv/lib/python3.10/site-packages/nose/core.py", line 153
    print "%s version %s" % (os.path.basename(sys.argv[0]), __version__)
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
SyntaxError: Missing parentheses in call to 'print'. Did you mean print(...)?

from hyperon-experimental.

Looks like it generated a module for a Python 2. Do you have pip installed in your environment? What does pip --version show?

from hyperon-experimental.

Yes, it is 21.3.1

from hyperon-experimental.

To me pip also prints a Python version:

$ pip --version
pip 21.0 from /usr/lib/python3.10/site-packages/pip (python 3.10)

from hyperon-experimental.

I only send the version sorry,

(venv) build $pip --version
pip 21.3.1 from /home/hedra/SNET/hyperon-experimental/venv/lib/python3.10/site-packages/pip (python 3.10)

from hyperon-experimental.

Ok, it looks strange: your environment seems to be consistent but somehow it generates Python 2 code during installation of the nose module.

from hyperon-experimental.

I am not sure how pip works here. Guys in nose issue thread mentioned that nose for a Python 3 is converted from Python 2 code. Looks like in your case this doesn't work. Could you please execute: pip install -v -U --force-reinstall nose --no-binary :all: 2>&1 | tee /tmp/pip.log and attach the /tmp/pip.log file to the issue.

from hyperon-experimental.

pip.log

from hyperon-experimental.

Ok, log shows that nose is definitely installed as a Python 2 app. Python tries to compile it but cannot because of compatibility errors. As a last hope please try:

pip uninstall -y nose
pip install nose-py3

May be it will help.

from hyperon-experimental.

It works. Thanks!
My nosetest version is now 1.4.
Closing the issue.

from hyperon-experimental.

Unfortunately nose-py3 has an issue itself: atsb/nose-py3#1 (comment) so I cannot recommend this workaround as a general solution.

from hyperon-experimental.

Looks like it works when Nosetests is installed using a system package manager or using environment like Anaconda which also install packages from own repo not from PyPi.

from hyperon-experimental.