Python gmxapi.error

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You were able to update to gmxapi 0.2 alpha okay? Note that the updated documentation is available at http://manual.gromacs.org/nightly/gmxapi/userguide/pythonreference.html

Can you please share an example script that you are having trouble with?

Also, check the erroroutput result.

I think I gave you incomplete advice. I think you will need to add at least one “newline” to the stdin.

Try

cmd = commandline_operation(
    ‘gmx_mpi’,
    arguments=[‘genion', '-neutral', 'yes', '-p’],
    stdin='15\n')
cmd.run()

or

cmd = commandline_operation(
    ‘gmx_mpi’,
    arguments=[‘genion', '-neutral', 'yes', '-p’],
    stdin='15\n\n')
cmd.run()

and maybe

if cmd.output.returncode.result() != 0:
    print(cmd.output.erroroutput.result())