We are currently solving the following issue within our repository. Here is the issue text:
--- BEGIN ISSUE ---
[V3]  Dev commands and discord.ext.commands

Right now, debug/eval (and repl, maybe?) expose `discord.ext.commands` as `commands` Given that we subclass various things in this for our use in `redbot.core.commands`, shouldn't we be exposing our version? In either case, the other is still importable, but it seems our default should be to use our 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: `redbot/core/dev_commands.py`
Content:
```
1 import asyncio
2 import inspect
3 import io
4 import textwrap
5 import traceback
6 from contextlib import redirect_stdout
7 from copy import copy
8 
9 import discord
10 from . import checks, commands
11 from .i18n import Translator
12 from .utils.chat_formatting import box, pagify
13 
14 """
15 Notice:
16 
17 95% of the below code came from R.Danny which can be found here:
18 
19 https://github.com/Rapptz/RoboDanny/blob/master/cogs/repl.py
20 """
21 
22 _ = Translator("Dev", __file__)
23 
24 
25 class Dev:
26     """Various development focused utilities."""
27 
28     def __init__(self):
29         self._last_result = None
30         self.sessions = set()
31 
32     @staticmethod
33     def cleanup_code(content):
34         """Automatically removes code blocks from the code."""
35         # remove ```py\n```
36         if content.startswith("```") and content.endswith("```"):
37             return "\n".join(content.split("\n")[1:-1])
38 
39         # remove `foo`
40         return content.strip("` \n")
41 
42     @staticmethod
43     def get_syntax_error(e):
44         """Format a syntax error to send to the user.
45 
46         Returns a string representation of the error formatted as a codeblock.
47         """
48         if e.text is None:
49             return box("{0.__class__.__name__}: {0}".format(e), lang="py")
50         return box("{0.text}{1:>{0.offset}}\n{2}: {0}".format(e, "^", type(e).__name__), lang="py")
51 
52     @staticmethod
53     def get_pages(msg: str):
54         """Pagify the given message for output to the user."""
55         return pagify(msg, delims=["\n", " "], priority=True, shorten_by=10)
56 
57     @staticmethod
58     def sanitize_output(ctx: commands.Context, input_: str) -> str:
59         """Hides the bot's token from a string."""
60         token = ctx.bot.http.token
61         r = "[EXPUNGED]"
62         result = input_.replace(token, r)
63         result = result.replace(token.lower(), r)
64         result = result.replace(token.upper(), r)
65         return result
66 
67     @commands.command()
68     @checks.is_owner()
69     async def debug(self, ctx, *, code):
70         """Evaluate a statement of python code.
71 
72         The bot will always respond with the return value of the code.
73         If the return value of the code is a coroutine, it will be awaited,
74         and the result of that will be the bot's response.
75 
76         Note: Only one statement may be evaluated. Using await, yield or
77         similar restricted keywords will result in a syntax error. For multiple
78         lines or asynchronous code, see [p]repl or [p]eval.
79 
80         Environment Variables:
81             ctx      - command invokation context
82             bot      - bot object
83             channel  - the current channel object
84             author   - command author's member object
85             message  - the command's message object
86             discord  - discord.py library
87             commands - discord.py commands extension
88             _        - The result of the last dev command.
89         """
90         env = {
91             "bot": ctx.bot,
92             "ctx": ctx,
93             "channel": ctx.channel,
94             "author": ctx.author,
95             "guild": ctx.guild,
96             "message": ctx.message,
97             "discord": discord,
98             "commands": commands,
99             "_": self._last_result,
100         }
101 
102         code = self.cleanup_code(code)
103 
104         try:
105             result = eval(code, env)
106         except SyntaxError as e:
107             await ctx.send(self.get_syntax_error(e))
108             return
109         except Exception as e:
110             await ctx.send(box("{}: {!s}".format(type(e).__name__, e), lang="py"))
111             return
112 
113         if asyncio.iscoroutine(result):
114             result = await result
115 
116         self._last_result = result
117 
118         result = self.sanitize_output(ctx, str(result))
119 
120         await ctx.send_interactive(self.get_pages(result), box_lang="py")
121 
122     @commands.command(name="eval")
123     @checks.is_owner()
124     async def _eval(self, ctx, *, body: str):
125         """Execute asynchronous code.
126 
127         This command wraps code into the body of an async function and then
128         calls and awaits it. The bot will respond with anything printed to
129         stdout, as well as the return value of the function.
130 
131         The code can be within a codeblock, inline code or neither, as long
132         as they are not mixed and they are formatted correctly.
133 
134         Environment Variables:
135             ctx      - command invokation context
136             bot      - bot object
137             channel  - the current channel object
138             author   - command author's member object
139             message  - the command's message object
140             discord  - discord.py library
141             commands - discord.py commands extension
142             _        - The result of the last dev command.
143         """
144         env = {
145             "bot": ctx.bot,
146             "ctx": ctx,
147             "channel": ctx.channel,
148             "author": ctx.author,
149             "guild": ctx.guild,
150             "message": ctx.message,
151             "discord": discord,
152             "commands": commands,
153             "_": self._last_result,
154         }
155 
156         body = self.cleanup_code(body)
157         stdout = io.StringIO()
158 
159         to_compile = "async def func():\n%s" % textwrap.indent(body, "  ")
160 
161         try:
162             exec(to_compile, env)
163         except SyntaxError as e:
164             return await ctx.send(self.get_syntax_error(e))
165 
166         func = env["func"]
167         result = None
168         try:
169             with redirect_stdout(stdout):
170                 result = await func()
171         except:
172             printed = "{}{}".format(stdout.getvalue(), traceback.format_exc())
173         else:
174             printed = stdout.getvalue()
175             await ctx.tick()
176 
177         if result is not None:
178             self._last_result = result
179             msg = "{}{}".format(printed, result)
180         else:
181             msg = printed
182         msg = self.sanitize_output(ctx, msg)
183 
184         await ctx.send_interactive(self.get_pages(msg), box_lang="py")
185 
186     @commands.command()
187     @checks.is_owner()
188     async def repl(self, ctx):
189         """Open an interactive REPL.
190 
191         The REPL will only recognise code as messages which start with a
192         backtick. This includes codeblocks, and as such multiple lines can be
193         evaluated.
194 
195         You may not await any code in this REPL unless you define it inside an
196         async function.
197         """
198         variables = {
199             "ctx": ctx,
200             "bot": ctx.bot,
201             "message": ctx.message,
202             "guild": ctx.guild,
203             "channel": ctx.channel,
204             "author": ctx.author,
205             "_": None,
206         }
207 
208         if ctx.channel.id in self.sessions:
209             await ctx.send(
210                 _("Already running a REPL session in this channel. Exit it with `quit`.")
211             )
212             return
213 
214         self.sessions.add(ctx.channel.id)
215         await ctx.send(_("Enter code to execute or evaluate. `exit()` or `quit` to exit."))
216 
217         msg_check = lambda m: (
218             m.author == ctx.author and m.channel == ctx.channel and m.content.startswith("`")
219         )
220 
221         while True:
222             response = await ctx.bot.wait_for("message", check=msg_check)
223 
224             cleaned = self.cleanup_code(response.content)
225 
226             if cleaned in ("quit", "exit", "exit()"):
227                 await ctx.send("Exiting.")
228                 self.sessions.remove(ctx.channel.id)
229                 return
230 
231             executor = exec
232             if cleaned.count("\n") == 0:
233                 # single statement, potentially 'eval'
234                 try:
235                     code = compile(cleaned, "<repl session>", "eval")
236                 except SyntaxError:
237                     pass
238                 else:
239                     executor = eval
240 
241             if executor is exec:
242                 try:
243                     code = compile(cleaned, "<repl session>", "exec")
244                 except SyntaxError as e:
245                     await ctx.send(self.get_syntax_error(e))
246                     continue
247 
248             variables["message"] = response
249 
250             stdout = io.StringIO()
251 
252             msg = ""
253 
254             try:
255                 with redirect_stdout(stdout):
256                     result = executor(code, variables)
257                     if inspect.isawaitable(result):
258                         result = await result
259             except:
260                 value = stdout.getvalue()
261                 msg = "{}{}".format(value, traceback.format_exc())
262             else:
263                 value = stdout.getvalue()
264                 if result is not None:
265                     msg = "{}{}".format(value, result)
266                     variables["_"] = result
267                 elif value:
268                     msg = "{}".format(value)
269 
270             msg = self.sanitize_output(ctx, msg)
271 
272             try:
273                 await ctx.send_interactive(self.get_pages(msg), box_lang="py")
274             except discord.Forbidden:
275                 pass
276             except discord.HTTPException as e:
277                 await ctx.send(_("Unexpected error: `{}`").format(e))
278 
279     @commands.command()
280     @checks.is_owner()
281     async def mock(self, ctx, user: discord.Member, *, command):
282         """Mock another user invoking a command.
283 
284         The prefix must not be entered.
285         """
286         msg = copy(ctx.message)
287         msg.author = user
288         msg.content = ctx.prefix + command
289 
290         ctx.bot.dispatch("message", msg)
291 
292     @commands.command(name="mockmsg")
293     @checks.is_owner()
294     async def mock_msg(self, ctx, user: discord.Member, *, content: str):
295         """Dispatch a message event as if it were sent by a different user.
296 
297         Only reads the raw content of the message. Attachments, embeds etc. are
298         ignored.
299         """
300         old_author = ctx.author
301         old_content = ctx.message.content
302         ctx.message.author = user
303         ctx.message.content = content
304 
305         ctx.bot.dispatch("message", ctx.message)
306 
307         # If we change the author and content back too quickly,
308         # the bot won't process the mocked message in time.
309         await asyncio.sleep(2)
310         ctx.message.author = old_author
311         ctx.message.content = old_content
312
```
--- 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/redbot/core/dev_commands.py b/redbot/core/dev_commands.py
--- a/redbot/core/dev_commands.py
+++ b/redbot/core/dev_commands.py
@@ -84,7 +84,7 @@
             author   - command author's member object
             message  - the command's message object
             discord  - discord.py library
-            commands - discord.py commands extension
+            commands - redbot.core.commands
             _        - The result of the last dev command.
         """
         env = {
@@ -138,7 +138,7 @@
             author   - command author's member object
             message  - the command's message object
             discord  - discord.py library
-            commands - discord.py commands extension
+            commands - redbot.core.commands
             _        - The result of the last dev command.
         """
         env = {

{"golden_diff": "diff --git a/redbot/core/dev_commands.py b/redbot/core/dev_commands.py\n--- a/redbot/core/dev_commands.py\n+++ b/redbot/core/dev_commands.py\n@@ -84,7 +84,7 @@\n             author   - command author's member object\n             message  - the command's message object\n             discord  - discord.py library\n-            commands - discord.py commands extension\n+            commands - redbot.core.commands\n             _        - The result of the last dev command.\n         \"\"\"\n         env = {\n@@ -138,7 +138,7 @@\n             author   - command author's member object\n             message  - the command's message object\n             discord  - discord.py library\n-            commands - discord.py commands extension\n+            commands - redbot.core.commands\n             _        - The result of the last dev command.\n         \"\"\"\n         env = {\n", "issue": "[V3]  Dev commands and discord.ext.commands\n\r\nRight now, debug/eval (and repl, maybe?) expose `discord.ext.commands` as `commands` Given that we subclass various things in this for our use in `redbot.core.commands`, shouldn't we be exposing our version? In either case, the other is still importable, but it seems our default should be to use our version.\n", "before_files": [{"content": "import asyncio\nimport inspect\nimport io\nimport textwrap\nimport traceback\nfrom contextlib import redirect_stdout\nfrom copy import copy\n\nimport discord\nfrom . import checks, commands\nfrom .i18n import Translator\nfrom .utils.chat_formatting import box, pagify\n\n\"\"\"\nNotice:\n\n95% of the below code came from R.Danny which can be found here:\n\nhttps://github.com/Rapptz/RoboDanny/blob/master/cogs/repl.py\n\"\"\"\n\n_ = Translator(\"Dev\", __file__)\n\n\nclass Dev:\n    \"\"\"Various development focused utilities.\"\"\"\n\n    def __init__(self):\n        self._last_result = None\n        self.sessions = set()\n\n    @staticmethod\n    def cleanup_code(content):\n        \"\"\"Automatically removes code blocks from the code.\"\"\"\n        # remove ```py\\n```\n        if content.startswith(\"```\") and content.endswith(\"```\"):\n            return \"\\n\".join(content.split(\"\\n\")[1:-1])\n\n        # remove `foo`\n        return content.strip(\"` \\n\")\n\n    @staticmethod\n    def get_syntax_error(e):\n        \"\"\"Format a syntax error to send to the user.\n\n        Returns a string representation of the error formatted as a codeblock.\n        \"\"\"\n        if e.text is None:\n            return box(\"{0.__class__.__name__}: {0}\".format(e), lang=\"py\")\n        return box(\"{0.text}{1:>{0.offset}}\\n{2}: {0}\".format(e, \"^\", type(e).__name__), lang=\"py\")\n\n    @staticmethod\n    def get_pages(msg: str):\n        \"\"\"Pagify the given message for output to the user.\"\"\"\n        return pagify(msg, delims=[\"\\n\", \" \"], priority=True, shorten_by=10)\n\n    @staticmethod\n    def sanitize_output(ctx: commands.Context, input_: str) -> str:\n        \"\"\"Hides the bot's token from a string.\"\"\"\n        token = ctx.bot.http.token\n        r = \"[EXPUNGED]\"\n        result = input_.replace(token, r)\n        result = result.replace(token.lower(), r)\n        result = result.replace(token.upper(), r)\n        return result\n\n    @commands.command()\n    @checks.is_owner()\n    async def debug(self, ctx, *, code):\n        \"\"\"Evaluate a statement of python code.\n\n        The bot will always respond with the return value of the code.\n        If the return value of the code is a coroutine, it will be awaited,\n        and the result of that will be the bot's response.\n\n        Note: Only one statement may be evaluated. Using await, yield or\n        similar restricted keywords will result in a syntax error. For multiple\n        lines or asynchronous code, see [p]repl or [p]eval.\n\n        Environment Variables:\n            ctx      - command invokation context\n            bot      - bot object\n            channel  - the current channel object\n            author   - command author's member object\n            message  - the command's message object\n            discord  - discord.py library\n            commands - discord.py commands extension\n            _        - The result of the last dev command.\n        \"\"\"\n        env = {\n            \"bot\": ctx.bot,\n            \"ctx\": ctx,\n            \"channel\": ctx.channel,\n            \"author\": ctx.author,\n            \"guild\": ctx.guild,\n            \"message\": ctx.message,\n            \"discord\": discord,\n            \"commands\": commands,\n            \"_\": self._last_result,\n        }\n\n        code = self.cleanup_code(code)\n\n        try:\n            result = eval(code, env)\n        except SyntaxError as e:\n            await ctx.send(self.get_syntax_error(e))\n            return\n        except Exception as e:\n            await ctx.send(box(\"{}: {!s}\".format(type(e).__name__, e), lang=\"py\"))\n            return\n\n        if asyncio.iscoroutine(result):\n            result = await result\n\n        self._last_result = result\n\n        result = self.sanitize_output(ctx, str(result))\n\n        await ctx.send_interactive(self.get_pages(result), box_lang=\"py\")\n\n    @commands.command(name=\"eval\")\n    @checks.is_owner()\n    async def _eval(self, ctx, *, body: str):\n        \"\"\"Execute asynchronous code.\n\n        This command wraps code into the body of an async function and then\n        calls and awaits it. The bot will respond with anything printed to\n        stdout, as well as the return value of the function.\n\n        The code can be within a codeblock, inline code or neither, as long\n        as they are not mixed and they are formatted correctly.\n\n        Environment Variables:\n            ctx      - command invokation context\n            bot      - bot object\n            channel  - the current channel object\n            author   - command author's member object\n            message  - the command's message object\n            discord  - discord.py library\n            commands - discord.py commands extension\n            _        - The result of the last dev command.\n        \"\"\"\n        env = {\n            \"bot\": ctx.bot,\n            \"ctx\": ctx,\n            \"channel\": ctx.channel,\n            \"author\": ctx.author,\n            \"guild\": ctx.guild,\n            \"message\": ctx.message,\n            \"discord\": discord,\n            \"commands\": commands,\n            \"_\": self._last_result,\n        }\n\n        body = self.cleanup_code(body)\n        stdout = io.StringIO()\n\n        to_compile = \"async def func():\\n%s\" % textwrap.indent(body, \"  \")\n\n        try:\n            exec(to_compile, env)\n        except SyntaxError as e:\n            return await ctx.send(self.get_syntax_error(e))\n\n        func = env[\"func\"]\n        result = None\n        try:\n            with redirect_stdout(stdout):\n                result = await func()\n        except:\n            printed = \"{}{}\".format(stdout.getvalue(), traceback.format_exc())\n        else:\n            printed = stdout.getvalue()\n            await ctx.tick()\n\n        if result is not None:\n            self._last_result = result\n            msg = \"{}{}\".format(printed, result)\n        else:\n            msg = printed\n        msg = self.sanitize_output(ctx, msg)\n\n        await ctx.send_interactive(self.get_pages(msg), box_lang=\"py\")\n\n    @commands.command()\n    @checks.is_owner()\n    async def repl(self, ctx):\n        \"\"\"Open an interactive REPL.\n\n        The REPL will only recognise code as messages which start with a\n        backtick. This includes codeblocks, and as such multiple lines can be\n        evaluated.\n\n        You may not await any code in this REPL unless you define it inside an\n        async function.\n        \"\"\"\n        variables = {\n            \"ctx\": ctx,\n            \"bot\": ctx.bot,\n            \"message\": ctx.message,\n            \"guild\": ctx.guild,\n            \"channel\": ctx.channel,\n            \"author\": ctx.author,\n            \"_\": None,\n        }\n\n        if ctx.channel.id in self.sessions:\n            await ctx.send(\n                _(\"Already running a REPL session in this channel. Exit it with `quit`.\")\n            )\n            return\n\n        self.sessions.add(ctx.channel.id)\n        await ctx.send(_(\"Enter code to execute or evaluate. `exit()` or `quit` to exit.\"))\n\n        msg_check = lambda m: (\n            m.author == ctx.author and m.channel == ctx.channel and m.content.startswith(\"`\")\n        )\n\n        while True:\n            response = await ctx.bot.wait_for(\"message\", check=msg_check)\n\n            cleaned = self.cleanup_code(response.content)\n\n            if cleaned in (\"quit\", \"exit\", \"exit()\"):\n                await ctx.send(\"Exiting.\")\n                self.sessions.remove(ctx.channel.id)\n                return\n\n            executor = exec\n            if cleaned.count(\"\\n\") == 0:\n                # single statement, potentially 'eval'\n                try:\n                    code = compile(cleaned, \"<repl session>\", \"eval\")\n                except SyntaxError:\n                    pass\n                else:\n                    executor = eval\n\n            if executor is exec:\n                try:\n                    code = compile(cleaned, \"<repl session>\", \"exec\")\n                except SyntaxError as e:\n                    await ctx.send(self.get_syntax_error(e))\n                    continue\n\n            variables[\"message\"] = response\n\n            stdout = io.StringIO()\n\n            msg = \"\"\n\n            try:\n                with redirect_stdout(stdout):\n                    result = executor(code, variables)\n                    if inspect.isawaitable(result):\n                        result = await result\n            except:\n                value = stdout.getvalue()\n                msg = \"{}{}\".format(value, traceback.format_exc())\n            else:\n                value = stdout.getvalue()\n                if result is not None:\n                    msg = \"{}{}\".format(value, result)\n                    variables[\"_\"] = result\n                elif value:\n                    msg = \"{}\".format(value)\n\n            msg = self.sanitize_output(ctx, msg)\n\n            try:\n                await ctx.send_interactive(self.get_pages(msg), box_lang=\"py\")\n            except discord.Forbidden:\n                pass\n            except discord.HTTPException as e:\n                await ctx.send(_(\"Unexpected error: `{}`\").format(e))\n\n    @commands.command()\n    @checks.is_owner()\n    async def mock(self, ctx, user: discord.Member, *, command):\n        \"\"\"Mock another user invoking a command.\n\n        The prefix must not be entered.\n        \"\"\"\n        msg = copy(ctx.message)\n        msg.author = user\n        msg.content = ctx.prefix + command\n\n        ctx.bot.dispatch(\"message\", msg)\n\n    @commands.command(name=\"mockmsg\")\n    @checks.is_owner()\n    async def mock_msg(self, ctx, user: discord.Member, *, content: str):\n        \"\"\"Dispatch a message event as if it were sent by a different user.\n\n        Only reads the raw content of the message. Attachments, embeds etc. are\n        ignored.\n        \"\"\"\n        old_author = ctx.author\n        old_content = ctx.message.content\n        ctx.message.author = user\n        ctx.message.content = content\n\n        ctx.bot.dispatch(\"message\", ctx.message)\n\n        # If we change the author and content back too quickly,\n        # the bot won't process the mocked message in time.\n        await asyncio.sleep(2)\n        ctx.message.author = old_author\n        ctx.message.content = old_content\n", "path": "redbot/core/dev_commands.py"}], "after_files": [{"content": "import asyncio\nimport inspect\nimport io\nimport textwrap\nimport traceback\nfrom contextlib import redirect_stdout\nfrom copy import copy\n\nimport discord\nfrom . import checks, commands\nfrom .i18n import Translator\nfrom .utils.chat_formatting import box, pagify\n\n\"\"\"\nNotice:\n\n95% of the below code came from R.Danny which can be found here:\n\nhttps://github.com/Rapptz/RoboDanny/blob/master/cogs/repl.py\n\"\"\"\n\n_ = Translator(\"Dev\", __file__)\n\n\nclass Dev:\n    \"\"\"Various development focused utilities.\"\"\"\n\n    def __init__(self):\n        self._last_result = None\n        self.sessions = set()\n\n    @staticmethod\n    def cleanup_code(content):\n        \"\"\"Automatically removes code blocks from the code.\"\"\"\n        # remove ```py\\n```\n        if content.startswith(\"```\") and content.endswith(\"```\"):\n            return \"\\n\".join(content.split(\"\\n\")[1:-1])\n\n        # remove `foo`\n        return content.strip(\"` \\n\")\n\n    @staticmethod\n    def get_syntax_error(e):\n        \"\"\"Format a syntax error to send to the user.\n\n        Returns a string representation of the error formatted as a codeblock.\n        \"\"\"\n        if e.text is None:\n            return box(\"{0.__class__.__name__}: {0}\".format(e), lang=\"py\")\n        return box(\"{0.text}{1:>{0.offset}}\\n{2}: {0}\".format(e, \"^\", type(e).__name__), lang=\"py\")\n\n    @staticmethod\n    def get_pages(msg: str):\n        \"\"\"Pagify the given message for output to the user.\"\"\"\n        return pagify(msg, delims=[\"\\n\", \" \"], priority=True, shorten_by=10)\n\n    @staticmethod\n    def sanitize_output(ctx: commands.Context, input_: str) -> str:\n        \"\"\"Hides the bot's token from a string.\"\"\"\n        token = ctx.bot.http.token\n        r = \"[EXPUNGED]\"\n        result = input_.replace(token, r)\n        result = result.replace(token.lower(), r)\n        result = result.replace(token.upper(), r)\n        return result\n\n    @commands.command()\n    @checks.is_owner()\n    async def debug(self, ctx, *, code):\n        \"\"\"Evaluate a statement of python code.\n\n        The bot will always respond with the return value of the code.\n        If the return value of the code is a coroutine, it will be awaited,\n        and the result of that will be the bot's response.\n\n        Note: Only one statement may be evaluated. Using await, yield or\n        similar restricted keywords will result in a syntax error. For multiple\n        lines or asynchronous code, see [p]repl or [p]eval.\n\n        Environment Variables:\n            ctx      - command invokation context\n            bot      - bot object\n            channel  - the current channel object\n            author   - command author's member object\n            message  - the command's message object\n            discord  - discord.py library\n            commands - redbot.core.commands\n            _        - The result of the last dev command.\n        \"\"\"\n        env = {\n            \"bot\": ctx.bot,\n            \"ctx\": ctx,\n            \"channel\": ctx.channel,\n            \"author\": ctx.author,\n            \"guild\": ctx.guild,\n            \"message\": ctx.message,\n            \"discord\": discord,\n            \"commands\": commands,\n            \"_\": self._last_result,\n        }\n\n        code = self.cleanup_code(code)\n\n        try:\n            result = eval(code, env)\n        except SyntaxError as e:\n            await ctx.send(self.get_syntax_error(e))\n            return\n        except Exception as e:\n            await ctx.send(box(\"{}: {!s}\".format(type(e).__name__, e), lang=\"py\"))\n            return\n\n        if asyncio.iscoroutine(result):\n            result = await result\n\n        self._last_result = result\n\n        result = self.sanitize_output(ctx, str(result))\n\n        await ctx.send_interactive(self.get_pages(result), box_lang=\"py\")\n\n    @commands.command(name=\"eval\")\n    @checks.is_owner()\n    async def _eval(self, ctx, *, body: str):\n        \"\"\"Execute asynchronous code.\n\n        This command wraps code into the body of an async function and then\n        calls and awaits it. The bot will respond with anything printed to\n        stdout, as well as the return value of the function.\n\n        The code can be within a codeblock, inline code or neither, as long\n        as they are not mixed and they are formatted correctly.\n\n        Environment Variables:\n            ctx      - command invokation context\n            bot      - bot object\n            channel  - the current channel object\n            author   - command author's member object\n            message  - the command's message object\n            discord  - discord.py library\n            commands - redbot.core.commands\n            _        - The result of the last dev command.\n        \"\"\"\n        env = {\n            \"bot\": ctx.bot,\n            \"ctx\": ctx,\n            \"channel\": ctx.channel,\n            \"author\": ctx.author,\n            \"guild\": ctx.guild,\n            \"message\": ctx.message,\n            \"discord\": discord,\n            \"commands\": commands,\n            \"_\": self._last_result,\n        }\n\n        body = self.cleanup_code(body)\n        stdout = io.StringIO()\n\n        to_compile = \"async def func():\\n%s\" % textwrap.indent(body, \"  \")\n\n        try:\n            exec(to_compile, env)\n        except SyntaxError as e:\n            return await ctx.send(self.get_syntax_error(e))\n\n        func = env[\"func\"]\n        result = None\n        try:\n            with redirect_stdout(stdout):\n                result = await func()\n        except:\n            printed = \"{}{}\".format(stdout.getvalue(), traceback.format_exc())\n        else:\n            printed = stdout.getvalue()\n            await ctx.tick()\n\n        if result is not None:\n            self._last_result = result\n            msg = \"{}{}\".format(printed, result)\n        else:\n            msg = printed\n        msg = self.sanitize_output(ctx, msg)\n\n        await ctx.send_interactive(self.get_pages(msg), box_lang=\"py\")\n\n    @commands.command()\n    @checks.is_owner()\n    async def repl(self, ctx):\n        \"\"\"Open an interactive REPL.\n\n        The REPL will only recognise code as messages which start with a\n        backtick. This includes codeblocks, and as such multiple lines can be\n        evaluated.\n\n        You may not await any code in this REPL unless you define it inside an\n        async function.\n        \"\"\"\n        variables = {\n            \"ctx\": ctx,\n            \"bot\": ctx.bot,\n            \"message\": ctx.message,\n            \"guild\": ctx.guild,\n            \"channel\": ctx.channel,\n            \"author\": ctx.author,\n            \"_\": None,\n        }\n\n        if ctx.channel.id in self.sessions:\n            await ctx.send(\n                _(\"Already running a REPL session in this channel. Exit it with `quit`.\")\n            )\n            return\n\n        self.sessions.add(ctx.channel.id)\n        await ctx.send(_(\"Enter code to execute or evaluate. `exit()` or `quit` to exit.\"))\n\n        msg_check = lambda m: (\n            m.author == ctx.author and m.channel == ctx.channel and m.content.startswith(\"`\")\n        )\n\n        while True:\n            response = await ctx.bot.wait_for(\"message\", check=msg_check)\n\n            cleaned = self.cleanup_code(response.content)\n\n            if cleaned in (\"quit\", \"exit\", \"exit()\"):\n                await ctx.send(\"Exiting.\")\n                self.sessions.remove(ctx.channel.id)\n                return\n\n            executor = exec\n            if cleaned.count(\"\\n\") == 0:\n                # single statement, potentially 'eval'\n                try:\n                    code = compile(cleaned, \"<repl session>\", \"eval\")\n                except SyntaxError:\n                    pass\n                else:\n                    executor = eval\n\n            if executor is exec:\n                try:\n                    code = compile(cleaned, \"<repl session>\", \"exec\")\n                except SyntaxError as e:\n                    await ctx.send(self.get_syntax_error(e))\n                    continue\n\n            variables[\"message\"] = response\n\n            stdout = io.StringIO()\n\n            msg = \"\"\n\n            try:\n                with redirect_stdout(stdout):\n                    result = executor(code, variables)\n                    if inspect.isawaitable(result):\n                        result = await result\n            except:\n                value = stdout.getvalue()\n                msg = \"{}{}\".format(value, traceback.format_exc())\n            else:\n                value = stdout.getvalue()\n                if result is not None:\n                    msg = \"{}{}\".format(value, result)\n                    variables[\"_\"] = result\n                elif value:\n                    msg = \"{}\".format(value)\n\n            msg = self.sanitize_output(ctx, msg)\n\n            try:\n                await ctx.send_interactive(self.get_pages(msg), box_lang=\"py\")\n            except discord.Forbidden:\n                pass\n            except discord.HTTPException as e:\n                await ctx.send(_(\"Unexpected error: `{}`\").format(e))\n\n    @commands.command()\n    @checks.is_owner()\n    async def mock(self, ctx, user: discord.Member, *, command):\n        \"\"\"Mock another user invoking a command.\n\n        The prefix must not be entered.\n        \"\"\"\n        msg = copy(ctx.message)\n        msg.author = user\n        msg.content = ctx.prefix + command\n\n        ctx.bot.dispatch(\"message\", msg)\n\n    @commands.command(name=\"mockmsg\")\n    @checks.is_owner()\n    async def mock_msg(self, ctx, user: discord.Member, *, content: str):\n        \"\"\"Dispatch a message event as if it were sent by a different user.\n\n        Only reads the raw content of the message. Attachments, embeds etc. are\n        ignored.\n        \"\"\"\n        old_author = ctx.author\n        old_content = ctx.message.content\n        ctx.message.author = user\n        ctx.message.content = content\n\n        ctx.bot.dispatch(\"message\", ctx.message)\n\n        # If we change the author and content back too quickly,\n        # the bot won't process the mocked message in time.\n        await asyncio.sleep(2)\n        ctx.message.author = old_author\n        ctx.message.content = old_content\n", "path": "redbot/core/dev_commands.py"}]}