prompt: We are currently solving the following issue within our repository. Here is the issue text:
  --- BEGIN ISSUE ---
  Catch error when source command cannot retrieve lines or file
  Sentry Issue: [BOT-7K](https://sentry.io/organizations/python-discord/issues/1816540252/?referrer=github_integration)
  
  This happens if the target command is one which has been added via internal eval or some other dynamic method, so it's _really_ low priority.
  
  I think it'd be most convenient to let the error propagate a bit and handle it here https://github.com/python-discord/bot/blob/3649c2a03dc158a25f2c3be98db8691f903a1953/bot/cogs/source.py#L59
  
  ```
  OSError: could not get source code
  (1 additional frame(s) were not displayed)
  ...
    File "bot/cogs/source.py", line 59, in source_command
      embed = await self.build_embed(source_item)
    File "bot/cogs/source.py", line 102, in build_embed
      url, location, first_line = self.get_source_link(source_object)
    File "bot/cogs/source.py", line 84, in get_source_link
      lines, first_line_no = inspect.getsourcelines(src)
    File "inspect.py", line 967, in getsourcelines
      lines, lnum = findsource(object)
    File "inspect.py", line 798, in findsource
      raise OSError('could not get source code')
  ```
  
  --- END ISSUE ---
  
  Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
  --- BEGIN FILES ---
  Path: `bot/cogs/source.py`
  Content:
  ```
  1 import inspect
  2 from pathlib import Path
  3 from typing import Optional, Tuple, Union
  4 
  5 from discord import Embed
  6 from discord.ext import commands
  7 
  8 from bot.bot import Bot
  9 from bot.constants import URLs
  10 
  11 SourceType = Union[commands.HelpCommand, commands.Command, commands.Cog, str, commands.ExtensionNotLoaded]
  12 
  13 
  14 class SourceConverter(commands.Converter):
  15     """Convert an argument into a help command, tag, command, or cog."""
  16 
  17     async def convert(self, ctx: commands.Context, argument: str) -> SourceType:
  18         """Convert argument into source object."""
  19         if argument.lower().startswith("help"):
  20             return ctx.bot.help_command
  21 
  22         cog = ctx.bot.get_cog(argument)
  23         if cog:
  24             return cog
  25 
  26         cmd = ctx.bot.get_command(argument)
  27         if cmd:
  28             return cmd
  29 
  30         tags_cog = ctx.bot.get_cog("Tags")
  31         show_tag = True
  32 
  33         if not tags_cog:
  34             show_tag = False
  35         elif argument.lower() in tags_cog._cache:
  36             return argument.lower()
  37 
  38         raise commands.BadArgument(
  39             f"Unable to convert `{argument}` to valid command{', tag,' if show_tag else ''} or Cog."
  40         )
  41 
  42 
  43 class BotSource(commands.Cog):
  44     """Displays information about the bot's source code."""
  45 
  46     def __init__(self, bot: Bot):
  47         self.bot = bot
  48 
  49     @commands.command(name="source", aliases=("src",))
  50     async def source_command(self, ctx: commands.Context, *, source_item: SourceConverter = None) -> None:
  51         """Display information and a GitHub link to the source code of a command, tag, or cog."""
  52         if not source_item:
  53             embed = Embed(title="Bot's GitHub Repository")
  54             embed.add_field(name="Repository", value=f"[Go to GitHub]({URLs.github_bot_repo})")
  55             embed.set_thumbnail(url="https://avatars1.githubusercontent.com/u/9919")
  56             await ctx.send(embed=embed)
  57             return
  58 
  59         embed = await self.build_embed(source_item)
  60         await ctx.send(embed=embed)
  61 
  62     def get_source_link(self, source_item: SourceType) -> Tuple[str, str, Optional[int]]:
  63         """Build GitHub link of source item, return this link, file location and first line number."""
  64         if isinstance(source_item, commands.HelpCommand):
  65             src = type(source_item)
  66             filename = inspect.getsourcefile(src)
  67         elif isinstance(source_item, commands.Command):
  68             if source_item.cog_name == "Alias":
  69                 cmd_name = source_item.callback.__name__.replace("_alias", "")
  70                 cmd = self.bot.get_command(cmd_name.replace("_", " "))
  71                 src = cmd.callback.__code__
  72                 filename = src.co_filename
  73             else:
  74                 src = source_item.callback.__code__
  75                 filename = src.co_filename
  76         elif isinstance(source_item, str):
  77             tags_cog = self.bot.get_cog("Tags")
  78             filename = tags_cog._cache[source_item]["location"]
  79         else:
  80             src = type(source_item)
  81             filename = inspect.getsourcefile(src)
  82 
  83         if not isinstance(source_item, str):
  84             lines, first_line_no = inspect.getsourcelines(src)
  85             lines_extension = f"#L{first_line_no}-L{first_line_no+len(lines)-1}"
  86         else:
  87             first_line_no = None
  88             lines_extension = ""
  89 
  90         # Handle tag file location differently than others to avoid errors in some cases
  91         if not first_line_no:
  92             file_location = Path(filename).relative_to("/bot/")
  93         else:
  94             file_location = Path(filename).relative_to(Path.cwd()).as_posix()
  95 
  96         url = f"{URLs.github_bot_repo}/blob/master/{file_location}{lines_extension}"
  97 
  98         return url, file_location, first_line_no or None
  99 
  100     async def build_embed(self, source_object: SourceType) -> Optional[Embed]:
  101         """Build embed based on source object."""
  102         url, location, first_line = self.get_source_link(source_object)
  103 
  104         if isinstance(source_object, commands.HelpCommand):
  105             title = "Help Command"
  106             description = source_object.__doc__.splitlines()[1]
  107         elif isinstance(source_object, commands.Command):
  108             if source_object.cog_name == "Alias":
  109                 cmd_name = source_object.callback.__name__.replace("_alias", "")
  110                 cmd = self.bot.get_command(cmd_name.replace("_", " "))
  111                 description = cmd.short_doc
  112             else:
  113                 description = source_object.short_doc
  114 
  115             title = f"Command: {source_object.qualified_name}"
  116         elif isinstance(source_object, str):
  117             title = f"Tag: {source_object}"
  118             description = ""
  119         else:
  120             title = f"Cog: {source_object.qualified_name}"
  121             description = source_object.description.splitlines()[0]
  122 
  123         embed = Embed(title=title, description=description)
  124         embed.add_field(name="Source Code", value=f"[Go to GitHub]({url})")
  125         line_text = f":{first_line}" if first_line else ""
  126         embed.set_footer(text=f"{location}{line_text}")
  127 
  128         return embed
  129 
  130 
  131 def setup(bot: Bot) -> None:
  132     """Load the BotSource cog."""
  133     bot.add_cog(BotSource(bot))
  134
  ```
  --- 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/bot/cogs/source.py b/bot/cogs/source.py
  --- a/bot/cogs/source.py
  +++ b/bot/cogs/source.py
  @@ -60,11 +60,12 @@
           await ctx.send(embed=embed)
   
       def get_source_link(self, source_item: SourceType) -> Tuple[str, str, Optional[int]]:
  -        """Build GitHub link of source item, return this link, file location and first line number."""
  -        if isinstance(source_item, commands.HelpCommand):
  -            src = type(source_item)
  -            filename = inspect.getsourcefile(src)
  -        elif isinstance(source_item, commands.Command):
  +        """
  +        Build GitHub link of source item, return this link, file location and first line number.
  +
  +        Raise BadArgument if `source_item` is a dynamically-created object (e.g. via internal eval).
  +        """
  +        if isinstance(source_item, commands.Command):
               if source_item.cog_name == "Alias":
                   cmd_name = source_item.callback.__name__.replace("_alias", "")
                   cmd = self.bot.get_command(cmd_name.replace("_", " "))
  @@ -78,10 +79,17 @@
               filename = tags_cog._cache[source_item]["location"]
           else:
               src = type(source_item)
  -            filename = inspect.getsourcefile(src)
  +            try:
  +                filename = inspect.getsourcefile(src)
  +            except TypeError:
  +                raise commands.BadArgument("Cannot get source for a dynamically-created object.")
   
           if not isinstance(source_item, str):
  -            lines, first_line_no = inspect.getsourcelines(src)
  +            try:
  +                lines, first_line_no = inspect.getsourcelines(src)
  +            except OSError:
  +                raise commands.BadArgument("Cannot get source for a dynamically-created object.")
  +
               lines_extension = f"#L{first_line_no}-L{first_line_no+len(lines)-1}"
           else:
               first_line_no = None
  
verification_info: {"golden_diff": "diff --git a/bot/cogs/source.py b/bot/cogs/source.py\n--- a/bot/cogs/source.py\n+++ b/bot/cogs/source.py\n@@ -60,11 +60,12 @@\n         await ctx.send(embed=embed)\n \n     def get_source_link(self, source_item: SourceType) -> Tuple[str, str, Optional[int]]:\n-        \"\"\"Build GitHub link of source item, return this link, file location and first line number.\"\"\"\n-        if isinstance(source_item, commands.HelpCommand):\n-            src = type(source_item)\n-            filename = inspect.getsourcefile(src)\n-        elif isinstance(source_item, commands.Command):\n+        \"\"\"\n+        Build GitHub link of source item, return this link, file location and first line number.\n+\n+        Raise BadArgument if `source_item` is a dynamically-created object (e.g. via internal eval).\n+        \"\"\"\n+        if isinstance(source_item, commands.Command):\n             if source_item.cog_name == \"Alias\":\n                 cmd_name = source_item.callback.__name__.replace(\"_alias\", \"\")\n                 cmd = self.bot.get_command(cmd_name.replace(\"_\", \" \"))\n@@ -78,10 +79,17 @@\n             filename = tags_cog._cache[source_item][\"location\"]\n         else:\n             src = type(source_item)\n-            filename = inspect.getsourcefile(src)\n+            try:\n+                filename = inspect.getsourcefile(src)\n+            except TypeError:\n+                raise commands.BadArgument(\"Cannot get source for a dynamically-created object.\")\n \n         if not isinstance(source_item, str):\n-            lines, first_line_no = inspect.getsourcelines(src)\n+            try:\n+                lines, first_line_no = inspect.getsourcelines(src)\n+            except OSError:\n+                raise commands.BadArgument(\"Cannot get source for a dynamically-created object.\")\n+\n             lines_extension = f\"#L{first_line_no}-L{first_line_no+len(lines)-1}\"\n         else:\n             first_line_no = None\n", "issue": "Catch error when source command cannot retrieve lines or file\nSentry Issue: [BOT-7K](https://sentry.io/organizations/python-discord/issues/1816540252/?referrer=github_integration)\r\n\r\nThis happens if the target command is one which has been added via internal eval or some other dynamic method, so it's _really_ low priority.\r\n\r\nI think it'd be most convenient to let the error propagate a bit and handle it here https://github.com/python-discord/bot/blob/3649c2a03dc158a25f2c3be98db8691f903a1953/bot/cogs/source.py#L59\r\n\r\n```\r\nOSError: could not get source code\r\n(1 additional frame(s) were not displayed)\r\n...\r\n  File \"bot/cogs/source.py\", line 59, in source_command\r\n    embed = await self.build_embed(source_item)\r\n  File \"bot/cogs/source.py\", line 102, in build_embed\r\n    url, location, first_line = self.get_source_link(source_object)\r\n  File \"bot/cogs/source.py\", line 84, in get_source_link\r\n    lines, first_line_no = inspect.getsourcelines(src)\r\n  File \"inspect.py\", line 967, in getsourcelines\r\n    lines, lnum = findsource(object)\r\n  File \"inspect.py\", line 798, in findsource\r\n    raise OSError('could not get source code')\r\n```\n", "before_files": [{"content": "import inspect\nfrom pathlib import Path\nfrom typing import Optional, Tuple, Union\n\nfrom discord import Embed\nfrom discord.ext import commands\n\nfrom bot.bot import Bot\nfrom bot.constants import URLs\n\nSourceType = Union[commands.HelpCommand, commands.Command, commands.Cog, str, commands.ExtensionNotLoaded]\n\n\nclass SourceConverter(commands.Converter):\n    \"\"\"Convert an argument into a help command, tag, command, or cog.\"\"\"\n\n    async def convert(self, ctx: commands.Context, argument: str) -> SourceType:\n        \"\"\"Convert argument into source object.\"\"\"\n        if argument.lower().startswith(\"help\"):\n            return ctx.bot.help_command\n\n        cog = ctx.bot.get_cog(argument)\n        if cog:\n            return cog\n\n        cmd = ctx.bot.get_command(argument)\n        if cmd:\n            return cmd\n\n        tags_cog = ctx.bot.get_cog(\"Tags\")\n        show_tag = True\n\n        if not tags_cog:\n            show_tag = False\n        elif argument.lower() in tags_cog._cache:\n            return argument.lower()\n\n        raise commands.BadArgument(\n            f\"Unable to convert `{argument}` to valid command{', tag,' if show_tag else ''} or Cog.\"\n        )\n\n\nclass BotSource(commands.Cog):\n    \"\"\"Displays information about the bot's source code.\"\"\"\n\n    def __init__(self, bot: Bot):\n        self.bot = bot\n\n    @commands.command(name=\"source\", aliases=(\"src\",))\n    async def source_command(self, ctx: commands.Context, *, source_item: SourceConverter = None) -> None:\n        \"\"\"Display information and a GitHub link to the source code of a command, tag, or cog.\"\"\"\n        if not source_item:\n            embed = Embed(title=\"Bot's GitHub Repository\")\n            embed.add_field(name=\"Repository\", value=f\"[Go to GitHub]({URLs.github_bot_repo})\")\n            embed.set_thumbnail(url=\"https://avatars1.githubusercontent.com/u/9919\")\n            await ctx.send(embed=embed)\n            return\n\n        embed = await self.build_embed(source_item)\n        await ctx.send(embed=embed)\n\n    def get_source_link(self, source_item: SourceType) -> Tuple[str, str, Optional[int]]:\n        \"\"\"Build GitHub link of source item, return this link, file location and first line number.\"\"\"\n        if isinstance(source_item, commands.HelpCommand):\n            src = type(source_item)\n            filename = inspect.getsourcefile(src)\n        elif isinstance(source_item, commands.Command):\n            if source_item.cog_name == \"Alias\":\n                cmd_name = source_item.callback.__name__.replace(\"_alias\", \"\")\n                cmd = self.bot.get_command(cmd_name.replace(\"_\", \" \"))\n                src = cmd.callback.__code__\n                filename = src.co_filename\n            else:\n                src = source_item.callback.__code__\n                filename = src.co_filename\n        elif isinstance(source_item, str):\n            tags_cog = self.bot.get_cog(\"Tags\")\n            filename = tags_cog._cache[source_item][\"location\"]\n        else:\n            src = type(source_item)\n            filename = inspect.getsourcefile(src)\n\n        if not isinstance(source_item, str):\n            lines, first_line_no = inspect.getsourcelines(src)\n            lines_extension = f\"#L{first_line_no}-L{first_line_no+len(lines)-1}\"\n        else:\n            first_line_no = None\n            lines_extension = \"\"\n\n        # Handle tag file location differently than others to avoid errors in some cases\n        if not first_line_no:\n            file_location = Path(filename).relative_to(\"/bot/\")\n        else:\n            file_location = Path(filename).relative_to(Path.cwd()).as_posix()\n\n        url = f\"{URLs.github_bot_repo}/blob/master/{file_location}{lines_extension}\"\n\n        return url, file_location, first_line_no or None\n\n    async def build_embed(self, source_object: SourceType) -> Optional[Embed]:\n        \"\"\"Build embed based on source object.\"\"\"\n        url, location, first_line = self.get_source_link(source_object)\n\n        if isinstance(source_object, commands.HelpCommand):\n            title = \"Help Command\"\n            description = source_object.__doc__.splitlines()[1]\n        elif isinstance(source_object, commands.Command):\n            if source_object.cog_name == \"Alias\":\n                cmd_name = source_object.callback.__name__.replace(\"_alias\", \"\")\n                cmd = self.bot.get_command(cmd_name.replace(\"_\", \" \"))\n                description = cmd.short_doc\n            else:\n                description = source_object.short_doc\n\n            title = f\"Command: {source_object.qualified_name}\"\n        elif isinstance(source_object, str):\n            title = f\"Tag: {source_object}\"\n            description = \"\"\n        else:\n            title = f\"Cog: {source_object.qualified_name}\"\n            description = source_object.description.splitlines()[0]\n\n        embed = Embed(title=title, description=description)\n        embed.add_field(name=\"Source Code\", value=f\"[Go to GitHub]({url})\")\n        line_text = f\":{first_line}\" if first_line else \"\"\n        embed.set_footer(text=f\"{location}{line_text}\")\n\n        return embed\n\n\ndef setup(bot: Bot) -> None:\n    \"\"\"Load the BotSource cog.\"\"\"\n    bot.add_cog(BotSource(bot))\n", "path": "bot/cogs/source.py"}], "after_files": [{"content": "import inspect\nfrom pathlib import Path\nfrom typing import Optional, Tuple, Union\n\nfrom discord import Embed\nfrom discord.ext import commands\n\nfrom bot.bot import Bot\nfrom bot.constants import URLs\n\nSourceType = Union[commands.HelpCommand, commands.Command, commands.Cog, str, commands.ExtensionNotLoaded]\n\n\nclass SourceConverter(commands.Converter):\n    \"\"\"Convert an argument into a help command, tag, command, or cog.\"\"\"\n\n    async def convert(self, ctx: commands.Context, argument: str) -> SourceType:\n        \"\"\"Convert argument into source object.\"\"\"\n        if argument.lower().startswith(\"help\"):\n            return ctx.bot.help_command\n\n        cog = ctx.bot.get_cog(argument)\n        if cog:\n            return cog\n\n        cmd = ctx.bot.get_command(argument)\n        if cmd:\n            return cmd\n\n        tags_cog = ctx.bot.get_cog(\"Tags\")\n        show_tag = True\n\n        if not tags_cog:\n            show_tag = False\n        elif argument.lower() in tags_cog._cache:\n            return argument.lower()\n\n        raise commands.BadArgument(\n            f\"Unable to convert `{argument}` to valid command{', tag,' if show_tag else ''} or Cog.\"\n        )\n\n\nclass BotSource(commands.Cog):\n    \"\"\"Displays information about the bot's source code.\"\"\"\n\n    def __init__(self, bot: Bot):\n        self.bot = bot\n\n    @commands.command(name=\"source\", aliases=(\"src\",))\n    async def source_command(self, ctx: commands.Context, *, source_item: SourceConverter = None) -> None:\n        \"\"\"Display information and a GitHub link to the source code of a command, tag, or cog.\"\"\"\n        if not source_item:\n            embed = Embed(title=\"Bot's GitHub Repository\")\n            embed.add_field(name=\"Repository\", value=f\"[Go to GitHub]({URLs.github_bot_repo})\")\n            embed.set_thumbnail(url=\"https://avatars1.githubusercontent.com/u/9919\")\n            await ctx.send(embed=embed)\n            return\n\n        embed = await self.build_embed(source_item)\n        await ctx.send(embed=embed)\n\n    def get_source_link(self, source_item: SourceType) -> Tuple[str, str, Optional[int]]:\n        \"\"\"\n        Build GitHub link of source item, return this link, file location and first line number.\n\n        Raise BadArgument if `source_item` is a dynamically-created object (e.g. via internal eval).\n        \"\"\"\n        if isinstance(source_item, commands.Command):\n            if source_item.cog_name == \"Alias\":\n                cmd_name = source_item.callback.__name__.replace(\"_alias\", \"\")\n                cmd = self.bot.get_command(cmd_name.replace(\"_\", \" \"))\n                src = cmd.callback.__code__\n                filename = src.co_filename\n            else:\n                src = source_item.callback.__code__\n                filename = src.co_filename\n        elif isinstance(source_item, str):\n            tags_cog = self.bot.get_cog(\"Tags\")\n            filename = tags_cog._cache[source_item][\"location\"]\n        else:\n            src = type(source_item)\n            try:\n                filename = inspect.getsourcefile(src)\n            except TypeError:\n                raise commands.BadArgument(\"Cannot get source for a dynamically-created object.\")\n\n        if not isinstance(source_item, str):\n            try:\n                lines, first_line_no = inspect.getsourcelines(src)\n            except OSError:\n                raise commands.BadArgument(\"Cannot get source for a dynamically-created object.\")\n\n            lines_extension = f\"#L{first_line_no}-L{first_line_no+len(lines)-1}\"\n        else:\n            first_line_no = None\n            lines_extension = \"\"\n\n        # Handle tag file location differently than others to avoid errors in some cases\n        if not first_line_no:\n            file_location = Path(filename).relative_to(\"/bot/\")\n        else:\n            file_location = Path(filename).relative_to(Path.cwd()).as_posix()\n\n        url = f\"{URLs.github_bot_repo}/blob/master/{file_location}{lines_extension}\"\n\n        return url, file_location, first_line_no or None\n\n    async def build_embed(self, source_object: SourceType) -> Optional[Embed]:\n        \"\"\"Build embed based on source object.\"\"\"\n        url, location, first_line = self.get_source_link(source_object)\n\n        if isinstance(source_object, commands.HelpCommand):\n            title = \"Help Command\"\n            description = source_object.__doc__.splitlines()[1]\n        elif isinstance(source_object, commands.Command):\n            if source_object.cog_name == \"Alias\":\n                cmd_name = source_object.callback.__name__.replace(\"_alias\", \"\")\n                cmd = self.bot.get_command(cmd_name.replace(\"_\", \" \"))\n                description = cmd.short_doc\n            else:\n                description = source_object.short_doc\n\n            title = f\"Command: {source_object.qualified_name}\"\n        elif isinstance(source_object, str):\n            title = f\"Tag: {source_object}\"\n            description = \"\"\n        else:\n            title = f\"Cog: {source_object.qualified_name}\"\n            description = source_object.description.splitlines()[0]\n\n        embed = Embed(title=title, description=description)\n        embed.add_field(name=\"Source Code\", value=f\"[Go to GitHub]({url})\")\n        line_text = f\":{first_line}\" if first_line else \"\"\n        embed.set_footer(text=f\"{location}{line_text}\")\n\n        return embed\n\n\ndef setup(bot: Bot) -> None:\n    \"\"\"Load the BotSource cog.\"\"\"\n    bot.add_cog(BotSource(bot))\n", "path": "bot/cogs/source.py"}]}