File not found error when calling exotethys the first time with new library

[jeroenbouwman]

I have have run into the following error:

"/home/bouwman/anaconda3/envs/cascade/lib/python3.8/site-packages/exotethys/_database.py", line 114, in
"Phoenix_2018":Database('Phoenix_2018', date_to_update='200412', vital=True), "Atlas_2000":Database('Atlas_2000', date_to_update='200403', vital=True), "Stagger_2015":Database('Stagger_2015', date_to_update='201001', vital=True)
File "/home/bouwman/anaconda3/envs/cascade/lib/python3.8/site-packages/exotethys/_database.py", line 59, in init
shutil.rmtree(self.directory_path)
File "/home/bouwman/anaconda3/envs/cascade/lib/python3.8/shutil.py", line 709, in rmtree
onerror(os.lstat, path, sys.exc_info())
File "/home/bouwman/anaconda3/envs/cascade/lib/python3.8/shutil.py", line 707, in rmtree
orig_st = os.lstat(path)
FileNotFoundError: [Errno 2] No such file or directory: '/home/bouwman/.exotethys/Stagger_2015'

which indicates that if the data base module is called the first time with new stellar models available and the corresponding directory in the .exotethys user directory is not present, a file not found error is raised. The sub directory is created at some point as after the error is thrown the subdirectory is there and running the exotethys package a second time works. So it is not a big problem but probably means that is somebody runs the package for the very first time they will get an error for each model library.
At least I think that is the problem.

A related problem I run into is the following:

File "/home/bouwman/python_projects/CASCADe/cascade/exoplanet_tools/exoplanet_tools.py", line 1490, in define_exotethys_model
from exotethys import sail
File "/home/bouwman/anaconda3/envs/cascade/lib/python3.8/site-packages/exotethys/init.py", line 7, in
from .sail import *
File "/home/bouwman/anaconda3/envs/cascade/lib/python3.8/site-packages/exotethys/sail.py", line 25, in
from ._database import Database, databases, sys, urlretrieve, glob, time, shutil
File "/home/bouwman/anaconda3/envs/cascade/lib/python3.8/site-packages/exotethys/_database.py", line 114, in
"Phoenix_2018":Database('Phoenix_2018', date_to_update='200412', vital=True), "Atlas_2000":Database('Atlas_2000', date_to_update='200403', vital=True), "Stagger_2015":Database('Stagger_2015', date_to_update='201001', vital=True)
File "/home/bouwman/anaconda3/envs/cascade/lib/python3.8/site-packages/exotethys/_database.py", line 70, in init
os.mkdir(self.directory_path)
FileExistsError: [Errno 17] File exists: '/home/bouwman/.exotethys/Stagger_2015'

So where the code thinks there is no directory and tries to create it but it already exists. perhaps using os.makedirs with exist_ok=True could solve this issue.

[jeroenbouwman]

As an additional note, I think the above problems occur if the library directories are empty i.e. you never downloaded a file for that specific stellar model library.

[gmorello]

Hi again,

This error is more subtle.
When I import exotethys or a subpackage for the first time, it creates automatically all database folders, even if they are empty. I get no errors running an example.
If then I remove a database folder, e.g. Stagger_2015, and run sail.ldc_calculate('PATH/sail_example9.txt'), I get the error you noted. This is not solved even if I import exotethys again.
However closing and reopening the python session, then reimporting exotethys or a subpackage the deleted folder is recreated automatically and there is no error. Something similar should happen when using notebooks.
Not sure how this can be avoided.