fix: Use model.schedule.steps -> mode._steps for batch_run

[rht]

Addresses projectmesa/mesa-examples#126

[github-actions]

Performance benchmarks:

Model	Size	Init time [95% CI]	Run time [95% CI]
Schelling	small	🔵 -0.0% [-0.3%, +0.3%]	🔵 -0.8% [-1.0%, -0.6%]
Schelling	large	🔵 -0.0% [-0.5%, +0.5%]	🔵 +0.6% [-1.8%, +3.2%]
WolfSheep	small	🔵 +0.9% [-0.0%, +1.8%]	🔵 +1.7% [+1.4%, +2.0%]
WolfSheep	large	🔵 +0.5% [+0.0%, +1.2%]	🔵 +2.0% [-0.8%, +5.0%]
BoidFlockers	small	🔵 -0.2% [-1.0%, +0.5%]	🔵 -0.1% [-0.9%, +0.6%]
BoidFlockers	large	🔵 +0.0% [-0.8%, +0.9%]	🔵 -0.3% [-0.9%, +0.4%]

[EwoutH]

Looks good, thanks!

Should we add a test case for this somewhere? Or add an example model to the CI that uses this?

[EwoutH]

@dylan-munson, could you install this branch and confirm it fixes your issue?

pip install -U -e git+https://github.com/rht/mesa@fix_batch_run#egg=mesa 

[dylan-munson]

Hi, I tried running the pip install command but received an error message that git checkout -q fix_batch_run did not run successfully, so I am unable to try.

[dylan-munson]

Sorry, I made a mistake somewhere and was actually able to install. This did indeed fix the problem, thank you!

[rht]

I will add a test case when I have the time. For now, this is a hotfix so that people's batch_run is back to be running again.

[rht]

Sorry, I made a mistake somewhere and was actually able to install. This did indeed fix the problem, thank you!

@dylan-munson thank you for testing.

[EwoutH]

Do we need a backport to 2.3 branch and a new 2.3.x. patch release?

[rht]

Ah, right, for 2.3.x only, since the _steps is new since 2.3.0.