Merge pull request #619 from BDonnot/issue_617

Fix issue #617

Author: BDonnot

.circleci/config.yml

@@ -163,7 +163,7 @@ jobs:
                    cd /tmp
                    grid2op.testinstall
 
-    legacy_lightsim:               
+    legacy_lightsim_old_pp:               
         executor: python38  # needs to be 38: whl of lightsim were not released for 3.10 at the time
         resource_class: small
         steps:
@@ -190,6 +190,33 @@ jobs:
                    export _GRID2OP_FORCE_TEST=1
                    python -m unittest grid2op/tests/test_basic_env_ls.py
 
+    legacy_lightsim:               
+        executor: python38  # needs to be 38: whl of lightsim were not released for 3.10 at the time
+        resource_class: small
+        steps:
+            - checkout
+            - run: 
+                command: |
+                    apt-get update
+                    apt-get install -y coinor-cbc
+            - run: python -m pip install virtualenv
+            - run: python -m virtualenv venv_test
+            - run:
+               command: |
+                   source venv_test/bin/activate
+                   python -m pip install -U pip setuptools wheel
+                   python -m pip install -U lightsim2grid==0.6.0 gymnasium "numpy<1.22"
+            - run:
+               command: |
+                   source venv_test/bin/activate
+                   python -m pip install -e .
+                   pip freeze
+            - run:
+                command: |
+                   source venv_test/bin/activate
+                   export _GRID2OP_FORCE_TEST=1
+                   python -m unittest grid2op/tests/test_basic_env_ls.py
+
     install39:
         executor: python39
         resource_class: small
@@ -340,6 +367,7 @@ workflows:
     test:
         jobs:
           - test
+          - legacy_lightsim_old_pp
           - legacy_lightsim
     install:
         jobs:

CHANGELOG.rst

@@ -73,6 +73,14 @@ Next release
 - [FIXED] another issue with the seeding of `MultifolderWithCache`: the seed was not used
   correctly on the cache data when calling `chronics_handler.reset` multiple times without 
   any changes
+- [FIXED] `Backend` now properly raise EnvError (grid2op exception) instead of previously 
+  `EnvironmentError` (python default exception)
+- [FIXED] a bug in `PandaPowerBackend` (missing attribute) causing directly 
+  https://github.com/rte-france/Grid2Op/issues/617
+- [FIXED] a bug in `Environment`: the thermal limit were used when loading the environment 
+  even before the "time series" are applied (and before the user defined thermal limits were set) 
+  which could lead to disconnected powerlines even before the initial step (t=0, when time 
+  series are loaded)
 - [ADDED] possibility to skip some step when calling `env.reset(..., options={"init ts": ...})`
 - [ADDED] possibility to limit the duration of an episode with `env.reset(..., options={"max step": ...})`
 - [ADDED] possibility to specify the "reset_options" used in `env.reset` when

grid2op/Backend/backend.py

@@ -1019,12 +1019,7 @@ def _runpf_with_diverging_exception(self, is_dc : bool) -> Optional[Exception]:
             conv, exc_me = self.runpf(is_dc=is_dc)  # run powerflow
         except Grid2OpException as exc_:
             exc_me = exc_
-        # except Exception as exc_:
-        #     exc_me = DivergingPowerflow(
-        #         f" An unexpected error occurred during the computation of the powerflow."
-        #         f"The error is: \n {exc_} \n. This is game over"
-        #     )
-
+            
         if not conv and exc_me is None:
             exc_me = DivergingPowerflow(
                 "GAME OVER: Powerflow has diverged during computation "
@@ -2160,22 +2155,22 @@ def assert_grid_correct_after_powerflow(self) -> None:
         if tmp.shape[0] != self.n_line:
             raise IncorrectNumberOfLines('returned by "backend.get_line_status()"')
         if (~np.isfinite(tmp)).any():
-            raise EnvironmentError(type(self).ERR_INIT_POWERFLOW)
+            raise EnvError(type(self).ERR_INIT_POWERFLOW)
         tmp = self.get_line_flow()
         if tmp.shape[0] != self.n_line:
             raise IncorrectNumberOfLines('returned by "backend.get_line_flow()"')
         if (~np.isfinite(tmp)).any():
-            raise EnvironmentError(type(self).ERR_INIT_POWERFLOW)
+            raise EnvError(type(self).ERR_INIT_POWERFLOW)
         tmp = self.get_thermal_limit()
         if tmp.shape[0] != self.n_line:
             raise IncorrectNumberOfLines('returned by "backend.get_thermal_limit()"')
         if (~np.isfinite(tmp)).any():
-            raise EnvironmentError(type(self).ERR_INIT_POWERFLOW)
+            raise EnvError(type(self).ERR_INIT_POWERFLOW)
         tmp = self.get_line_overflow()
         if tmp.shape[0] != self.n_line:
             raise IncorrectNumberOfLines('returned by "backend.get_line_overflow()"')
         if (~np.isfinite(tmp)).any():
-            raise EnvironmentError(type(self).ERR_INIT_POWERFLOW)
+            raise EnvError(type(self).ERR_INIT_POWERFLOW)
 
         tmp = self.generators_info()
         if len(tmp) != 3: