A problem about flow_bus_matrix method.

[wzz-wzz-wzz]

Environment

• Grid2op version: 1.5.2
• System: ubuntu18.04

Bug description

In the l2rpn_case14_sandbox environment, if I perform an action related to disconnection, the flow bus matrix can not be obtained, and because of this, I can not get the networkx graph either.

How to reproduce

Code snippet

import grid2op
env_name = 'l2rpn_case14_sandbox'
env = grid2op.make(env_name)
obs = env.reset()
action = env.action_space()
action.change_line_status = [9]
new_obs, *_ = env.step(action)
flow_matrix = new_obs.flow_bus_matrix()

Current output

ValueError: row, column, and data array must all be the same length

Expected output

I want to get a flow bus matrix or networkx graph when I perform an action related to disconnection. Thanks a lot!

[BDonnot]

Hello,

Thanks for reporting this issue. I just fixed in the branch development. It will be included in the next release (coming soon, this week or the next)

[BDonnot]

The bugfix is available in the "development" version of grid2op that you can install with:
pip install git+git://github.com/rte-france/grid2op.git@dev_1.6.0

[wzz-wzz-wzz]

Oh, thank you very much! I just tried this new version and it worked! @BDonnot

[BDonnot]

I am reoppening this issue because the fix is not pushed on pypi (yet) and other people can encounter this issue with version 1.5.2 (last stable release).

I will close it after the fix is stable :-)

EDIT: by "fix is stable" I mean "the fix i made is merged in the stable package version". This fix is final, in the sense that except if another bug is found, the fix will stay "as is" :-)

[wzz-wzz-wzz]

OK, I understand. Thanks again! @BDonnot

[BDonnot]

Fixed and merged in version 1.6.0, now available on pypi