We are currently solving the following issue within our repository. Here is the issue text:
--- BEGIN ISSUE ---
Remove botan from our library
according to [this](https://github.com/botanio/sdk#py) botan has it's own implementation for python. No need to reinvent the wheel. I suggest we remove it from ptb in the next major (8.0) version.

--- END ISSUE ---

Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
--- BEGIN FILES ---
Path: `telegram/contrib/__init__.py`
Content:
```
1 from .botan import Botan
2 
3 __all__ = ['Botan']
4
```

Path: `telegram/contrib/botan.py`
Content:
```
1 import logging
2 
3 from future.moves.urllib.parse import quote
4 from future.moves.urllib.error import HTTPError, URLError
5 from future.moves.urllib.request import urlopen, Request
6 
7 logging.getLogger(__name__).addHandler(logging.NullHandler())
8 
9 
10 class Botan(object):
11     """This class helps to send incoming events to your botan analytics account.
12      See more: https://github.com/botanio/sdk#botan-sdk
13     """
14 
15     token = ''
16     url_template = 'https://api.botan.io/track?token={token}' \
17                    '&uid={uid}&name={name}&src=python-telegram-bot'
18 
19     def __init__(self, token):
20         self.token = token
21         self.logger = logging.getLogger(__name__)
22 
23     def track(self, message, event_name='event'):
24         try:
25             uid = message.chat_id
26         except AttributeError:
27             self.logger.warn('No chat_id in message')
28             return False
29         data = message.to_json()
30         try:
31             url = self.url_template.format(
32                 token=str(self.token), uid=str(uid), name=quote(event_name))
33             request = Request(
34                 url, data=data.encode(), headers={'Content-Type': 'application/json'})
35             urlopen(request)
36             return True
37         except HTTPError as error:
38             self.logger.warn('Botan track error ' + str(error.code) + ':' + error.read().decode(
39                 'utf-8'))
40             return False
41         except URLError as error:
42             self.logger.warn('Botan track error ' + str(error.reason))
43             return False
44
```
--- 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/telegram/contrib/__init__.py b/telegram/contrib/__init__.py
deleted file mode 100644
--- a/telegram/contrib/__init__.py
+++ /dev/null
@@ -1,3 +0,0 @@
-from .botan import Botan
-
-__all__ = ['Botan']
diff --git a/telegram/contrib/botan.py b/telegram/contrib/botan.py
deleted file mode 100644
--- a/telegram/contrib/botan.py
+++ /dev/null
@@ -1,43 +0,0 @@
-import logging
-
-from future.moves.urllib.parse import quote
-from future.moves.urllib.error import HTTPError, URLError
-from future.moves.urllib.request import urlopen, Request
-
-logging.getLogger(__name__).addHandler(logging.NullHandler())
-
-
-class Botan(object):
-    """This class helps to send incoming events to your botan analytics account.
-     See more: https://github.com/botanio/sdk#botan-sdk
-    """
-
-    token = ''
-    url_template = 'https://api.botan.io/track?token={token}' \
-                   '&uid={uid}&name={name}&src=python-telegram-bot'
-
-    def __init__(self, token):
-        self.token = token
-        self.logger = logging.getLogger(__name__)
-
-    def track(self, message, event_name='event'):
-        try:
-            uid = message.chat_id
-        except AttributeError:
-            self.logger.warn('No chat_id in message')
-            return False
-        data = message.to_json()
-        try:
-            url = self.url_template.format(
-                token=str(self.token), uid=str(uid), name=quote(event_name))
-            request = Request(
-                url, data=data.encode(), headers={'Content-Type': 'application/json'})
-            urlopen(request)
-            return True
-        except HTTPError as error:
-            self.logger.warn('Botan track error ' + str(error.code) + ':' + error.read().decode(
-                'utf-8'))
-            return False
-        except URLError as error:
-            self.logger.warn('Botan track error ' + str(error.reason))
-            return False

{"golden_diff": "diff --git a/telegram/contrib/__init__.py b/telegram/contrib/__init__.py\ndeleted file mode 100644\n--- a/telegram/contrib/__init__.py\n+++ /dev/null\n@@ -1,3 +0,0 @@\n-from .botan import Botan\n-\n-__all__ = ['Botan']\ndiff --git a/telegram/contrib/botan.py b/telegram/contrib/botan.py\ndeleted file mode 100644\n--- a/telegram/contrib/botan.py\n+++ /dev/null\n@@ -1,43 +0,0 @@\n-import logging\n-\n-from future.moves.urllib.parse import quote\n-from future.moves.urllib.error import HTTPError, URLError\n-from future.moves.urllib.request import urlopen, Request\n-\n-logging.getLogger(__name__).addHandler(logging.NullHandler())\n-\n-\n-class Botan(object):\n-    \"\"\"This class helps to send incoming events to your botan analytics account.\n-     See more: https://github.com/botanio/sdk#botan-sdk\n-    \"\"\"\n-\n-    token = ''\n-    url_template = 'https://api.botan.io/track?token={token}' \\\n-                   '&uid={uid}&name={name}&src=python-telegram-bot'\n-\n-    def __init__(self, token):\n-        self.token = token\n-        self.logger = logging.getLogger(__name__)\n-\n-    def track(self, message, event_name='event'):\n-        try:\n-            uid = message.chat_id\n-        except AttributeError:\n-            self.logger.warn('No chat_id in message')\n-            return False\n-        data = message.to_json()\n-        try:\n-            url = self.url_template.format(\n-                token=str(self.token), uid=str(uid), name=quote(event_name))\n-            request = Request(\n-                url, data=data.encode(), headers={'Content-Type': 'application/json'})\n-            urlopen(request)\n-            return True\n-        except HTTPError as error:\n-            self.logger.warn('Botan track error ' + str(error.code) + ':' + error.read().decode(\n-                'utf-8'))\n-            return False\n-        except URLError as error:\n-            self.logger.warn('Botan track error ' + str(error.reason))\n-            return False\n", "issue": "Remove botan from our library\naccording to [this](https://github.com/botanio/sdk#py) botan has it's own implementation for python. No need to reinvent the wheel. I suggest we remove it from ptb in the next major (8.0) version.\n", "before_files": [{"content": "from .botan import Botan\n\n__all__ = ['Botan']\n", "path": "telegram/contrib/__init__.py"}, {"content": "import logging\n\nfrom future.moves.urllib.parse import quote\nfrom future.moves.urllib.error import HTTPError, URLError\nfrom future.moves.urllib.request import urlopen, Request\n\nlogging.getLogger(__name__).addHandler(logging.NullHandler())\n\n\nclass Botan(object):\n    \"\"\"This class helps to send incoming events to your botan analytics account.\n     See more: https://github.com/botanio/sdk#botan-sdk\n    \"\"\"\n\n    token = ''\n    url_template = 'https://api.botan.io/track?token={token}' \\\n                   '&uid={uid}&name={name}&src=python-telegram-bot'\n\n    def __init__(self, token):\n        self.token = token\n        self.logger = logging.getLogger(__name__)\n\n    def track(self, message, event_name='event'):\n        try:\n            uid = message.chat_id\n        except AttributeError:\n            self.logger.warn('No chat_id in message')\n            return False\n        data = message.to_json()\n        try:\n            url = self.url_template.format(\n                token=str(self.token), uid=str(uid), name=quote(event_name))\n            request = Request(\n                url, data=data.encode(), headers={'Content-Type': 'application/json'})\n            urlopen(request)\n            return True\n        except HTTPError as error:\n            self.logger.warn('Botan track error ' + str(error.code) + ':' + error.read().decode(\n                'utf-8'))\n            return False\n        except URLError as error:\n            self.logger.warn('Botan track error ' + str(error.reason))\n            return False\n", "path": "telegram/contrib/botan.py"}], "after_files": [{"content": null, "path": "telegram/contrib/__init__.py"}, {"content": null, "path": "telegram/contrib/botan.py"}]}