Fix CI badge link in README.md (#312)

* Fix CI badge link in README.md

Updated CI badge link in README.md to point to the correct workflow.

* Ignore mypy errors

* Ignore mypy new issues

Author: araffin

README.md

@@ -1,6 +1,6 @@
 <img src="docs/\_static/img/logo.png" align="right" width="40%"/>
 
-[![CI](https://github.com/Stable-Baselines-Team/stable-baselines3-contrib/workflows/CI/badge.svg)](https://github.com/Stable-Baselines-Team/stable-baselines3-contrib/actions) [![codestyle](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/psf/black)
+[![CI](https://github.com/Stable-Baselines-Team/stable-baselines3-contrib/actions/workflows/ci.yml/badge.svg)](https://github.com/Stable-Baselines-Team/stable-baselines3-contrib/actions/workflows/ci.yml) [![codestyle](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/psf/black)
 
 # Stable-Baselines3 - Contrib (SB3-Contrib)
 

sb3_contrib/common/envs/invalid_actions_env.py

@@ -20,7 +20,7 @@ def __init__(
             dim = 1
         assert n_invalid_actions < dim, f"Too many invalid actions: {n_invalid_actions} < {dim}"
 
-        space = spaces.Discrete(dim)
+        space = spaces.Discrete(dim)  # type: ignore[var-annotated]
         self.n_invalid_actions = n_invalid_actions
         self.possible_actions = np.arange(space.n, dtype=int)
         self.invalid_actions: list[int] = []

tests/wrappers/test_action_masker.py

@@ -6,7 +6,7 @@
 
 
 class IdentityEnvDiscrete(IdentityEnv):
-    def __init__(self, dim: int = 1, ep_length: int = 100):
+    def __init__(self, dim=1, ep_length=100):
         """
         Identity environment for testing purposes
 
@@ -17,12 +17,12 @@ def __init__(self, dim: int = 1, ep_length: int = 100):
         self.useless_property = 1
         super().__init__(ep_length=ep_length, space=space)
 
-    def _action_masks(self) -> list[int]:
+    def _action_masks(self):  #  -> list[bool]
         assert isinstance(self.action_space, spaces.Discrete)
         return [i == self.state for i in range(self.action_space.n)]
 
 
-def action_mask_fn(env: IdentityEnvDiscrete) -> list[int]:
+def action_mask_fn(env):  # -> list[int]
     assert isinstance(env.action_space, spaces.Discrete)
     return [i == env.state for i in range(env.action_space.n)]