prompt: We are currently solving the following issue within our repository. Here is the issue text:
  --- BEGIN ISSUE ---
  [Proposal] Add license to the license field in the setup.py file
  ### Proposal 
  
  Add license to the license field in the setup.py file.
  
  ### Motivation
  
  The license field is defined but not completed in the setup.py file. 
  
  Some package dependency scanners will block the usage of this package as the license is not specified.
  
  ### Checklist
  
  - [x] I have checked that there is no similar [issue](https://github.com/openai/gym/issues) in the repo (**required**)
  
  
  --- END ISSUE ---
  
  Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
  --- BEGIN FILES ---
  Path: `setup.py`
  Content:
  ```
  1 import os.path
  2 import sys
  3 import itertools
  4 
  5 from setuptools import find_packages, setup
  6 
  7 # Don't import gym module here, since deps may not be installed
  8 sys.path.insert(0, os.path.join(os.path.dirname(__file__), "gym"))
  9 from version import VERSION
  10 
  11 # Environment-specific dependencies.
  12 extras = {
  13     "atari": ["ale-py~=0.7.1"],
  14     "accept-rom-license": ["autorom[accept-rom-license]~=0.4.2"],
  15     "box2d": ["box2d-py==2.3.5", "pyglet>=1.4.0"],
  16     "classic_control": ["pyglet>=1.4.0"],
  17     "mujoco": ["mujoco_py>=1.50, <2.0"],
  18     "toy_text": ["pygame==2.1.0", "scipy>=1.4.1"],
  19     "other": ["lz4>=3.1.0", "opencv-python>=3.0"],
  20 }
  21 
  22 # Meta dependency groups.
  23 nomujoco_blacklist = set(["mujoco", "accept-rom-license", "atari"])
  24 nomujoco_groups = set(extras.keys()) - nomujoco_blacklist
  25 
  26 extras["nomujoco"] = list(
  27     itertools.chain.from_iterable(map(lambda group: extras[group], nomujoco_groups))
  28 )
  29 
  30 
  31 all_blacklist = set(["accept-rom-license"])
  32 all_groups = set(extras.keys()) - all_blacklist
  33 
  34 extras["all"] = list(
  35     itertools.chain.from_iterable(map(lambda group: extras[group], all_groups))
  36 )
  37 
  38 setup(
  39     name="gym",
  40     version=VERSION,
  41     description="Gym: A universal API for reinforcement learning environments.",
  42     url="https://github.com/openai/gym",
  43     author="Gym Community",
  44     author_email="jkterry@umd.edu",
  45     license="",
  46     packages=[package for package in find_packages() if package.startswith("gym")],
  47     zip_safe=False,
  48     install_requires=[
  49         "numpy>=1.18.0",
  50         "cloudpickle>=1.2.0",
  51         "importlib_metadata>=4.10.0; python_version < '3.10'",
  52     ],
  53     extras_require=extras,
  54     package_data={
  55         "gym": [
  56             "envs/mujoco/assets/*.xml",
  57             "envs/classic_control/assets/*.png",
  58             "envs/toy_text/font/*.ttf",
  59             "envs/toy_text/img/*.png",
  60         ]
  61     },
  62     tests_require=["pytest", "mock"],
  63     python_requires=">=3.7",
  64     classifiers=[
  65         "Programming Language :: Python :: 3",
  66         "Programming Language :: Python :: 3.7",
  67         "Programming Language :: Python :: 3.8",
  68         "Programming Language :: Python :: 3.9",
  69         "Programming Language :: Python :: 3.10",
  70     ],
  71 )
  72
  ```
  --- END FILES ---
  
  Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.
  
  Here is an example:
  
  ```diff
  diff --git a/examples/server_async.py b/examples/server_async.py
  --- a/examples/server_async.py
  +++ b/examples/server_async.py
  @@ -313,4 +313,4 @@
   
   
   if __name__ == "__main__":
  -    asyncio.run(run_async_server("."), debug=True)
  +    asyncio.run(run_async_server(), debug=True)
  diff --git a/examples/server_sync.py b/examples/server_sync.py
  --- a/examples/server_sync.py
  +++ b/examples/server_sync.py
  @@ -313,5 +313,5 @@
   
   
   if __name__ == "__main__":
  -    server = run_sync_server(".")
  +    server = run_sync_server()
       server.shutdown()
  
  ```
  
golden_diff: diff --git a/setup.py b/setup.py
  --- a/setup.py
  +++ b/setup.py
  @@ -42,7 +42,7 @@
       url="https://github.com/openai/gym",
       author="Gym Community",
       author_email="jkterry@umd.edu",
  -    license="",
  +    license="MIT",
       packages=[package for package in find_packages() if package.startswith("gym")],
       zip_safe=False,
       install_requires=[
  
verification_info: {"golden_diff": "diff --git a/setup.py b/setup.py\n--- a/setup.py\n+++ b/setup.py\n@@ -42,7 +42,7 @@\n     url=\"https://github.com/openai/gym\",\n     author=\"Gym Community\",\n     author_email=\"jkterry@umd.edu\",\n-    license=\"\",\n+    license=\"MIT\",\n     packages=[package for package in find_packages() if package.startswith(\"gym\")],\n     zip_safe=False,\n     install_requires=[\n", "issue": "[Proposal] Add license to the license field in the setup.py file\n### Proposal \r\n\r\nAdd license to the license field in the setup.py file.\r\n\r\n### Motivation\r\n\r\nThe license field is defined but not completed in the setup.py file. \r\n\r\nSome package dependency scanners will block the usage of this package as the license is not specified.\r\n\r\n### Checklist\r\n\r\n- [x] I have checked that there is no similar [issue](https://github.com/openai/gym/issues) in the repo (**required**)\r\n\n", "before_files": [{"content": "import os.path\nimport sys\nimport itertools\n\nfrom setuptools import find_packages, setup\n\n# Don't import gym module here, since deps may not be installed\nsys.path.insert(0, os.path.join(os.path.dirname(__file__), \"gym\"))\nfrom version import VERSION\n\n# Environment-specific dependencies.\nextras = {\n    \"atari\": [\"ale-py~=0.7.1\"],\n    \"accept-rom-license\": [\"autorom[accept-rom-license]~=0.4.2\"],\n    \"box2d\": [\"box2d-py==2.3.5\", \"pyglet>=1.4.0\"],\n    \"classic_control\": [\"pyglet>=1.4.0\"],\n    \"mujoco\": [\"mujoco_py>=1.50, <2.0\"],\n    \"toy_text\": [\"pygame==2.1.0\", \"scipy>=1.4.1\"],\n    \"other\": [\"lz4>=3.1.0\", \"opencv-python>=3.0\"],\n}\n\n# Meta dependency groups.\nnomujoco_blacklist = set([\"mujoco\", \"accept-rom-license\", \"atari\"])\nnomujoco_groups = set(extras.keys()) - nomujoco_blacklist\n\nextras[\"nomujoco\"] = list(\n    itertools.chain.from_iterable(map(lambda group: extras[group], nomujoco_groups))\n)\n\n\nall_blacklist = set([\"accept-rom-license\"])\nall_groups = set(extras.keys()) - all_blacklist\n\nextras[\"all\"] = list(\n    itertools.chain.from_iterable(map(lambda group: extras[group], all_groups))\n)\n\nsetup(\n    name=\"gym\",\n    version=VERSION,\n    description=\"Gym: A universal API for reinforcement learning environments.\",\n    url=\"https://github.com/openai/gym\",\n    author=\"Gym Community\",\n    author_email=\"jkterry@umd.edu\",\n    license=\"\",\n    packages=[package for package in find_packages() if package.startswith(\"gym\")],\n    zip_safe=False,\n    install_requires=[\n        \"numpy>=1.18.0\",\n        \"cloudpickle>=1.2.0\",\n        \"importlib_metadata>=4.10.0; python_version < '3.10'\",\n    ],\n    extras_require=extras,\n    package_data={\n        \"gym\": [\n            \"envs/mujoco/assets/*.xml\",\n            \"envs/classic_control/assets/*.png\",\n            \"envs/toy_text/font/*.ttf\",\n            \"envs/toy_text/img/*.png\",\n        ]\n    },\n    tests_require=[\"pytest\", \"mock\"],\n    python_requires=\">=3.7\",\n    classifiers=[\n        \"Programming Language :: Python :: 3\",\n        \"Programming Language :: Python :: 3.7\",\n        \"Programming Language :: Python :: 3.8\",\n        \"Programming Language :: Python :: 3.9\",\n        \"Programming Language :: Python :: 3.10\",\n    ],\n)\n", "path": "setup.py"}], "after_files": [{"content": "import os.path\nimport sys\nimport itertools\n\nfrom setuptools import find_packages, setup\n\n# Don't import gym module here, since deps may not be installed\nsys.path.insert(0, os.path.join(os.path.dirname(__file__), \"gym\"))\nfrom version import VERSION\n\n# Environment-specific dependencies.\nextras = {\n    \"atari\": [\"ale-py~=0.7.1\"],\n    \"accept-rom-license\": [\"autorom[accept-rom-license]~=0.4.2\"],\n    \"box2d\": [\"box2d-py==2.3.5\", \"pyglet>=1.4.0\"],\n    \"classic_control\": [\"pyglet>=1.4.0\"],\n    \"mujoco\": [\"mujoco_py>=1.50, <2.0\"],\n    \"toy_text\": [\"pygame==2.1.0\", \"scipy>=1.4.1\"],\n    \"other\": [\"lz4>=3.1.0\", \"opencv-python>=3.0\"],\n}\n\n# Meta dependency groups.\nnomujoco_blacklist = set([\"mujoco\", \"accept-rom-license\", \"atari\"])\nnomujoco_groups = set(extras.keys()) - nomujoco_blacklist\n\nextras[\"nomujoco\"] = list(\n    itertools.chain.from_iterable(map(lambda group: extras[group], nomujoco_groups))\n)\n\n\nall_blacklist = set([\"accept-rom-license\"])\nall_groups = set(extras.keys()) - all_blacklist\n\nextras[\"all\"] = list(\n    itertools.chain.from_iterable(map(lambda group: extras[group], all_groups))\n)\n\nsetup(\n    name=\"gym\",\n    version=VERSION,\n    description=\"Gym: A universal API for reinforcement learning environments.\",\n    url=\"https://github.com/openai/gym\",\n    author=\"Gym Community\",\n    author_email=\"jkterry@umd.edu\",\n    license=\"MIT\",\n    packages=[package for package in find_packages() if package.startswith(\"gym\")],\n    zip_safe=False,\n    install_requires=[\n        \"numpy>=1.18.0\",\n        \"cloudpickle>=1.2.0\",\n        \"importlib_metadata>=4.10.0; python_version < '3.10'\",\n    ],\n    extras_require=extras,\n    package_data={\n        \"gym\": [\n            \"envs/mujoco/assets/*.xml\",\n            \"envs/classic_control/assets/*.png\",\n            \"envs/toy_text/font/*.ttf\",\n            \"envs/toy_text/img/*.png\",\n        ]\n    },\n    tests_require=[\"pytest\", \"mock\"],\n    python_requires=\">=3.7\",\n    classifiers=[\n        \"Programming Language :: Python :: 3\",\n        \"Programming Language :: Python :: 3.7\",\n        \"Programming Language :: Python :: 3.8\",\n        \"Programming Language :: Python :: 3.9\",\n        \"Programming Language :: Python :: 3.10\",\n    ],\n)\n", "path": "setup.py"}]}