PYTHONPATH not being used

[PAGWatson]

Problem Description

The PYTHONPATH in my terminal does not seem to be used by spyder (and I've started spyder from the command line). In the console, sys.path just contains

['/home/<username>/miniconda3/envs/<env name>/lib/python310.zip',
 '/home/<username>/miniconda3/envs/<env name>/lib/python3.10',
 '/home/<username>/miniconda3/envs/<env name>/lib/python3.10/lib-dynload',
 '',
 '/home/<username>/miniconda3/envs/<env name>/lib/python3.10/site-packages']

os.environ['PYTHONPATH'] also does not exist, though other custom environment variables are present in os.environ, seeming to suggest that something has acted to exclude importing the PYTHONPATH variable. If I use ipython in the terminal in the same environment, sys.path and os.environ['PYTHONPATH'] contain all the directories in PYTHONPATH.

This is in a fresh spyder install in a miniconda environment. I'm opening Spyder from a MobaXterm terminal in a Windows 10 Subsystem for Linux Ubuntu installation.

I'm coming back to spyder after a while, so perhaps there are some extra steps I need to perform that I don't know - I don't remember needing to do anything special to use PYTHONPATH in spyder before, and I can't find documentation on it.

Versions

• Spyder version: 5.5.0
• Python version: 3.10.13
• Qt version: 5.15.8
• PyQt version: 5.15.9
• Operating System name/version: Ubuntu 20.04 in Windows 10 Subsystem for Linux

Dependencies

Mandatory:

atomicwrites >=1.2.0 : 1.4.1 (OK) chardet >=2.0.0 : 5.2.0 (OK) cloudpickle >=0.5.0 : 3.0.0 (OK) cookiecutter >=1.6.0 : 2.5.0 (OK) diff_match_patch >=20181111 : 20230430 (OK) intervaltree >=3.0.2 : 3.1.0 (OK) IPython >=8.13.0,<9.0.0,!=8.17.1 : 8.18.1 (OK) jedi >=0.17.2,<0.20.0 : 0.19.1 (OK) jellyfish >=0.7 : 1.0.3 (OK) jsonschema >=3.2.0 : 4.20.0 (OK) keyring >=17.0.0 : 24.3.0 (OK) nbconvert >=4.0 : 7.12.0 (OK) numpydoc >=0.6.0 : 1.6.0 (OK) parso >=0.7.0,<0.9.0 : 0.8.3 (OK) pexpect >=4.4.0 : 4.8.0 (OK) pickleshare >=0.4 : 0.7.5 (OK) psutil >=5.3 : 5.9.7 (OK) pygments >=2.0 : 2.17.2 (OK) pylint >=2.5.0,<3.1 : 3.0.3 (OK) pylint_venv >=3.0.2 : 3.0.3 (OK) pyls_spyder >=0.4.0 : 0.4.0 (OK) pylsp >=1.9.0,<1.10.0 : 1.9.0 (OK) pylsp_black >=1.2.0,<3.0.0 : 1.3.0 (OK) qdarkstyle >=3.2.0,<3.3.0 : 3.2 (OK) qstylizer >=0.2.2 : 0.2.2 (OK) qtawesome >=1.2.1 : 1.3.0 (OK) qtconsole >=5.5.0,<5.6.0 : 5.5.1 (OK) qtpy >=2.1.0 : 2.4.1 (OK) rtree >=0.9.7 : 1.1.0 (OK) setuptools >=49.6.0 : 68.2.2 (OK) sphinx >=0.6.6 : 7.2.6 (OK) spyder_kernels >=2.5.0,<2.6.0 : 2.5.0 (OK) textdistance >=4.2.0 : 4.5.0 (OK) three_merge >=0.1.1 : 0.1.1 (OK) watchdog >=0.10.3 : 3.0.0 (OK) xdg >=0.26 : 0.28 (OK) zmq >=22.1.0 : 25.1.2 (OK)

Optional:

cython >=0.21 : None (NOK) matplotlib >=3.0.0 : 3.8.2 (OK) numpy >=1.7 : 1.26.2 (OK) pandas >=1.1.1 : None (NOK) scipy >=0.17.0 : 1.11.4 (OK) sympy >=0.7.3 : None (NOK)