Hi Markus,

thank you very much for your answer and the help!
Do you have any idea what I could do to make the fmask-package "locatable" for the python-interpreter that grass is using?

I tried the following options, but I guess I just don't know sufficiently about how python and grass really work together:

My python-script looks more or less like this:
---------------------------------------
#!/usr/bin/env python3

import sys

print("SYS PATH")
print(sys.path)
print("")
print("SYS EXECUTABLE")
print(sys.executable)

import grass.script as grass
from rios import fileinfo # that's where it fails
from fmask import fmask

---------------------------------------

That's why I tried until now:

- I created an environment with conda and installed python-fmask via "conda install -c conda-forge python-fmask". The function "fmask_sentinel2Stacked.py" lies in "/home/robin/miniconda3/bin/fmask_sentinel2Stacked.py".

- When I open an interactive python-shell and import fmask and rios and the type: "fmask.__file__" it gives me "/home/robin/miniconda3/envs/fmask/lib/python3.7/site-packages/fmask/__init__.py"

- I then added "/home/robin/miniconda3/envs/fmask/lib/python3.7/site-packages/" to the variable PYTHONPATH in my .bashrc

- When I now start the interpreter that grass uses from the command line by typing "/usr/bin/pyton3" I can import fmask and rios

- However when I run the script with grass it always says that there is no package names rios. Moreover the path I added to PYTHONPATH is not printed when it executes "sys.path" in my grass script


I'm sorry for this little confusing question. But in case someone has any idea how I could make grass find fmask, would be super highly appreciated:)

thanks a lot in advance! Cheers
Robin

Citando Markus Neteler <[email protected]>:

Hi Robin,

On Sat, Mar 21, 2020 at 6:15 PM Robin Kohrs <[email protected]> wrote:


Hi everyone:)
I'm really sorry for this naive question. I'm kind of starting with
GRASS and I just can't find a solution...
The issue is, that I would like to try to write a little GRASS Add-on
and use the python-fmask package. While this package is only
downloadable via conda it always installs into
`/home/user/miniconda3/bin/python3`. Even when I did `conda
deactivate` prior to this.

I guess that mixing conda packages and "regular" ones is causing troubles.

When I then have the import statement `import fask` in the
grass-script it always throws an error, saying that fmask is not
installed. When I print the `sys.executable` in the grass-script it
tells me that the interpreter is in `usr/bin/python3`. So I thought
that I'd install the fmask-package in a way that this interpreter can
find it while executing the script. But I just don't know how. I can
add the fmask-path to sys.path, but I don't think this is the
solution. Maybe someone has a pointer what I'm not getting.

There is also the environment variable PYTHONPATH which could be set
in the session.
But again, mixing might cause problems.

Now I wanted to check
http://pythonfmask.org/en/latest/#downloads
but the server is down...

Hope everyone is good these days:)!

Good luck everyone,

Markus



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