Fix B904 across project (raise-without-from-except-inside)

Author: jb3

docs/utils.py

@@ -98,7 +98,7 @@ def linkcode_resolve(repo_link: str, domain: str, info: dict[str, str]) -> str |
                 # These are ClassVars added by pydantic.
                 # Since they're not in our source code, we cannot resolve them to a url.
                 return None
-            raise Exception(f"Could not find symbol `{symbol_name}` in {module.__name__}.")
+            raise Exception(f"Could not find symbol `{symbol_name}` in {module.__name__}.") from None
 
         start, end = pos
         _, offset = inspect.getsourcelines(symbol[-2])

pydis_core/_bot.py

@@ -317,8 +317,8 @@ async def setup_hook(self) -> None:
 
         try:
             await self.ping_services()
-        except Exception as e:  # noqa: BLE001
-            raise StartupError(e)
+        except Exception as e:
+            raise StartupError(e) from e
 
     async def ping_services(self) -> None:
         """Ping all required services on setup to ensure they are up before starting."""

pydis_core/exts/source.py

@@ -129,14 +129,14 @@ def _get_source_link(self, source_item: object, source_type: _SourceType) -> tup
             src = type(source_item)
             try:
                 filename = inspect.getsourcefile(src)
-            except TypeError:
-                raise commands.BadArgument("Cannot get source for a dynamically-created object.")
+            except TypeError as e:
+                raise commands.BadArgument("Cannot get source for a dynamically-created object.") from e
 
         if source_type != _SourceType.tag:
             try:
                 lines, first_line_no = inspect.getsourcelines(src)
-            except OSError:
-                raise commands.BadArgument("Cannot get source for a dynamically-created object.")
+            except OSError as e:
+                raise commands.BadArgument("Cannot get source for a dynamically-created object.") from e
 
             lines_extension = f"#L{first_line_no}-L{first_line_no+len(lines)-1}"
         else:

pydis_core/site_api.py

@@ -92,9 +92,9 @@ async def maybe_raise_for_status(response: aiohttp.ClientResponse, *, should_rai
             try:
                 response_json = await response.json()
                 raise ResponseCodeError(response=response, response_json=response_json)
-            except aiohttp.ContentTypeError:
+            except aiohttp.ContentTypeError as e:
                 response_text = await response.text()
-                raise ResponseCodeError(response=response, response_text=response_text)
+                raise ResponseCodeError(response=response, response_text=response_text) from e
 
     async def request(self, method: str, endpoint: str, *, raise_for_status: bool = True, **kwargs) -> dict | None:
         """

pydis_core/utils/function.py

@@ -51,16 +51,16 @@ def get_arg_value(name_or_pos: Argument, arguments: BoundArgs) -> typing.Any:
 
         try:
             _name, value = arg_values[arg_pos]
-        except IndexError:
-            raise ValueError(f"Argument position {arg_pos} is out of bounds.")
+        except IndexError as e:
+            raise ValueError(f"Argument position {arg_pos} is out of bounds.") from e
         else:
             return value
     elif isinstance(name_or_pos, str):
         arg_name = name_or_pos
         try:
             return arguments[arg_name]
-        except KeyError:
-            raise ValueError(f"Argument {arg_name!r} doesn't exist.")
+        except KeyError as e:
+            raise ValueError(f"Argument {arg_name!r} doesn't exist.") from e
     else:
         raise TypeError("'arg' must either be an int (positional index) or a str (keyword).")
 

pydis_core/utils/paste_service.py

@@ -98,8 +98,8 @@ async def send_to_paste_service(
         try:
             async with http_session.get(f"{paste_url}/api/v1/lexer") as response:
                 response_json = await response.json()  # Supported lexers are the keys.
-        except HTTPException:
-            raise PasteUploadError("Could not fetch supported lexers from selected paste_url.")
+        except HTTPException as e:
+            raise PasteUploadError("Could not fetch supported lexers from selected paste_url.") from e
 
         _lexers_supported_by_pastebin[paste_url] = list(response_json)