Test notebook - CHTuser

import sys
sys.path

['/Users/rjl/git/clawpack',
 '/opt/homebrew/Cellar/python@3.13/3.13.3_1/Frameworks/Python.framework/Versions/3.13/lib/python313.zip',
 '/opt/homebrew/Cellar/python@3.13/3.13.3_1/Frameworks/Python.framework/Versions/3.13/lib/python3.13',
 '/opt/homebrew/Cellar/python@3.13/3.13.3_1/Frameworks/Python.framework/Versions/3.13/lib/python3.13/lib-dynload',
 '',
 '/Users/rjl/venv/geo4/lib/python3.13/site-packages']

import clawpack
clawpack

from clawpack.clawutil import whichclaw
whichclaw


`import clawpack` imports from:
    /Users/rjl/git/clawpack

The CLAW environment variable is set to: 
    /Users/rjl/git/clawpack
The PYTHONPATH environment variable is set to: 
    /Users/rjl/git/clawpack

The following directories on sys.path might contain clawpack,
and are searched in this order:
    /Users/rjl/git/clawpack

The following easy-install.pth files list clawpack: