We are currently solving the following issue within our repository. Here is the issue text:
--- BEGIN ISSUE ---
Tornado 6.2 release readiness
I'm creating this issue to collect feedback on the 6.2 betas. For the folks who have tried them, do you think the release is ready to go or are there still more changes to be made?

Tagging @minrk and @graingert as authors of relevant PRs, although I'd welcome feedback from anyone interested in this release. 

--- END ISSUE ---

Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
--- BEGIN FILES ---
Path: `tornado/__init__.py`
Content:
```
1 #
2 # Copyright 2009 Facebook
3 #
4 # Licensed under the Apache License, Version 2.0 (the "License"); you may
5 # not use this file except in compliance with the License. You may obtain
6 # a copy of the License at
7 #
8 #     http://www.apache.org/licenses/LICENSE-2.0
9 #
10 # Unless required by applicable law or agreed to in writing, software
11 # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12 # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13 # License for the specific language governing permissions and limitations
14 # under the License.
15 
16 """The Tornado web server and tools."""
17 
18 # version is a human-readable version number.
19 
20 # version_info is a four-tuple for programmatic comparison. The first
21 # three numbers are the components of the version number.  The fourth
22 # is zero for an official release, positive for a development branch,
23 # or negative for a release candidate or beta (after the base version
24 # number has been incremented)
25 version = "6.2b2"
26 version_info = (6, 2, 0, -98)
27
```
--- 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()

```

diff --git a/tornado/__init__.py b/tornado/__init__.py
--- a/tornado/__init__.py
+++ b/tornado/__init__.py
@@ -22,5 +22,5 @@
 # is zero for an official release, positive for a development branch,
 # or negative for a release candidate or beta (after the base version
 # number has been incremented)
-version = "6.2b2"
-version_info = (6, 2, 0, -98)
+version = "6.2"
+version_info = (6, 2, 0, 0)

{"golden_diff": "diff --git a/tornado/__init__.py b/tornado/__init__.py\n--- a/tornado/__init__.py\n+++ b/tornado/__init__.py\n@@ -22,5 +22,5 @@\n # is zero for an official release, positive for a development branch,\n # or negative for a release candidate or beta (after the base version\n # number has been incremented)\n-version = \"6.2b2\"\n-version_info = (6, 2, 0, -98)\n+version = \"6.2\"\n+version_info = (6, 2, 0, 0)\n", "issue": "Tornado 6.2 release readiness\nI'm creating this issue to collect feedback on the 6.2 betas. For the folks who have tried them, do you think the release is ready to go or are there still more changes to be made?\r\n\r\nTagging @minrk and @graingert as authors of relevant PRs, although I'd welcome feedback from anyone interested in this release. \n", "before_files": [{"content": "#\n# Copyright 2009 Facebook\n#\n# Licensed under the Apache License, Version 2.0 (the \"License\"); you may\n# not use this file except in compliance with the License. You may obtain\n# a copy of the License at\n#\n#     http://www.apache.org/licenses/LICENSE-2.0\n#\n# Unless required by applicable law or agreed to in writing, software\n# distributed under the License is distributed on an \"AS IS\" BASIS, WITHOUT\n# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the\n# License for the specific language governing permissions and limitations\n# under the License.\n\n\"\"\"The Tornado web server and tools.\"\"\"\n\n# version is a human-readable version number.\n\n# version_info is a four-tuple for programmatic comparison. The first\n# three numbers are the components of the version number.  The fourth\n# is zero for an official release, positive for a development branch,\n# or negative for a release candidate or beta (after the base version\n# number has been incremented)\nversion = \"6.2b2\"\nversion_info = (6, 2, 0, -98)\n", "path": "tornado/__init__.py"}], "after_files": [{"content": "#\n# Copyright 2009 Facebook\n#\n# Licensed under the Apache License, Version 2.0 (the \"License\"); you may\n# not use this file except in compliance with the License. You may obtain\n# a copy of the License at\n#\n#     http://www.apache.org/licenses/LICENSE-2.0\n#\n# Unless required by applicable law or agreed to in writing, software\n# distributed under the License is distributed on an \"AS IS\" BASIS, WITHOUT\n# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the\n# License for the specific language governing permissions and limitations\n# under the License.\n\n\"\"\"The Tornado web server and tools.\"\"\"\n\n# version is a human-readable version number.\n\n# version_info is a four-tuple for programmatic comparison. The first\n# three numbers are the components of the version number.  The fourth\n# is zero for an official release, positive for a development branch,\n# or negative for a release candidate or beta (after the base version\n# number has been incremented)\nversion = \"6.2\"\nversion_info = (6, 2, 0, 0)\n", "path": "tornado/__init__.py"}]}