3.10 support (#2493)

* test again

* typo

.github/workflows/build.yml

@@ -6,7 +6,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [3.7, 3.8, 3.9]
+        python-version: ['3.7', '3.8', '3.9', '3.10']
     steps:
       - uses: actions/checkout@v2
       - run: |

README.md

@@ -10,7 +10,7 @@ To install the base Gym library, use `pip install gym`.
 
 This does not include dependencies for all families of environments (there's a massive number, and some can be problematic to install on certain systems). You can install these dependencies for one family like `pip install gym[atari]` or use `pip install gym[all]` to install all dependencies.
 
-We support Python 3.7, 3.8 and 3.9 on Linux and macOS. We will accept PRs related to Windows, but do not officially support it.
+We support Python 3.7, 3.8, 3.9 and 3.10 on Linux and macOS. We will accept PRs related to Windows, but do not officially support it.
 
 ## API
 
@@ -41,7 +41,7 @@ Gym keeps strict versioning for reproducibility reasons. All environments end in
 
 ## Citation
 
-A whitepaper from when OpenAI Gym just came out is available https://arxiv.org/pdf/1606.01540, and can be cited with the following bibtex entry:
+A whitepaper from when Gym just came out is available https://arxiv.org/pdf/1606.01540, and can be cited with the following bibtex entry:
 
 ```
 @misc{1606.01540,

gym/envs/README.md

@@ -1,20 +0,0 @@
-# Envs
-
-These are the core integrated environments. Note that we may later
-restructure any of the files, but will keep the environments available
-at the relevant package's top-level. So for example, you should access
-`AntEnv` as follows:
-
-```
-# Will be supported in future releases
-from gym.envs import mujoco
-mujoco.AntEnv
-```
-
-Rather than:
-
-```
-# May break in future releases
-from gym.envs.mujoco import ant
-ant.AntEnv
-```

gym/error.py

@@ -102,10 +102,7 @@ class APIError(Error):
             try:
                 http_body = http_body.decode("utf-8")
             except:
-                http_body = (
-                    "<Could not decode body as utf-8. "
-                    "Please report to gym@openai.com>"
-                )
+                http_body = "<Could not decode body as utf-8.>"
 
         self._message = message
         self.http_body = http_body

setup.py

@@ -41,7 +41,7 @@ setup(
     version=VERSION,
     description="Gym: A universal API for reinforcement learning environments.",
     url="https://github.com/openai/gym",
-    author="Gym community",
+    author="Gym Community",
     author_email="jkterry@umd.edu",
     license="",
     packages=[package for package in find_packages() if package.startswith("gym")],
@@ -71,5 +71,6 @@ setup(
         "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
+        "Programming Language :: Python :: 3.10",
     ],
 )