disturbing output when importing linopy on windows without cbc/glpk as available_solvers

[jankaeh]

In solvers.py the lines 30&33 create unwanted(?) output:

if sub.run([which, "glpsol"], stdout=sub.DEVNULL).returncode == 0:
available_solvers.append("glpk")

if sub.run([which, "cbc"], stdout=sub.DEVNULL).returncode == 0:
available_solvers.append("cbc")

Everytime I import linopy on windows without cbc/glpk available, I get this twice:
INFORMATION: Es konnten keine Dateien mit dem angegebenen
Muster gefunden werden.

adding "stderr=sub.STDOUT" like so removes this output:
if sub.run([which, "glpsol"], stdout=sub.DEVNULL, stderr=sub.STDOUT).returncode == 0:
available_solvers.append("glpk")

I am not sure if this is what you want?

[FabianHofmann]

I see, but the import still works right? Seems that windows prints out this extra information. I am not familiar with windows machines, would be nice to suppress this information.

[jankaeh]

Yes the import still works. I just was confused because I had no idea where that information came from. If the changes do not affect the expected behaviour on linux, it'd be nice to supress the info.