From: Zsolt Dollenstein Date: Sat, 18 Sep 2021 21:18:06 +0000 (+0100) Subject: fix all b904s (#2501) X-Git-Url: https://git.madduck.net/etc/vim.git/commitdiff_plain/22747a6937d53e38397e96c4ed5ed0571db31f71?ds=sidebyside fix all b904s (#2501) --- diff --git a/src/black/__init__.py b/src/black/__init__.py index d033e01..7fed135 100644 --- a/src/black/__init__.py +++ b/src/black/__init__.py @@ -114,7 +114,7 @@ def read_pyproject_toml( except (OSError, ValueError) as e: raise click.FileError( filename=value, hint=f"Error reading configuration file: {e}" - ) + ) from None if not config: return None @@ -172,7 +172,7 @@ def validate_regex( try: return re_compile_maybe_verbose(value) if value is not None else None except re.error: - raise click.BadParameter("Not a valid regular expression") + raise click.BadParameter("Not a valid regular expression") from None @click.command(context_settings=dict(help_option_names=["-h", "--help"])) @@ -777,7 +777,9 @@ def format_file_in_place( except NothingChanged: return False except JSONDecodeError: - raise ValueError(f"File '{src}' cannot be parsed as valid Jupyter notebook.") + raise ValueError( + f"File '{src}' cannot be parsed as valid Jupyter notebook." + ) from None if write_back == WriteBack.YES: with open(src, "w", encoding=encoding, newline=newline) as f: @@ -947,7 +949,7 @@ def format_cell(src: str, *, fast: bool, mode: Mode) -> str: try: masked_src, replacements = mask_cell(src_without_trailing_semicolon) except SyntaxError: - raise NothingChanged + raise NothingChanged from None masked_dst = format_str(masked_src, mode=mode) if not fast: check_stability_and_equivalence(masked_src, masked_dst, mode=mode) @@ -957,7 +959,7 @@ def format_cell(src: str, *, fast: bool, mode: Mode) -> str: ) dst = dst.rstrip("\n") if dst == src: - raise NothingChanged + raise NothingChanged from None return dst @@ -970,7 +972,7 @@ def validate_metadata(nb: MutableMapping[str, Any]) -> None: """ language = nb.get("metadata", {}).get("language_info", {}).get("name", None) if language is not None and language != "python": - raise NothingChanged + raise NothingChanged from None def format_ipynb_string(src_contents: str, *, fast: bool, mode: Mode) -> FileContent: @@ -1202,9 +1204,8 @@ def assert_equivalent(src: str, dst: str, *, pass_num: int = 1) -> None: src_ast = parse_ast(src) except Exception as exc: raise AssertionError( - "cannot use --safe with this file; failed to parse source file. AST" - f" error message: {exc}" - ) + "cannot use --safe with this file; failed to parse source file." + ) from exc try: dst_ast = parse_ast(dst) diff --git a/src/black/linegen.py b/src/black/linegen.py index fafaf10..eb53fa0 100644 --- a/src/black/linegen.py +++ b/src/black/linegen.py @@ -503,14 +503,14 @@ def right_hand_split( yield from right_hand_split(line, line_length, features=features, omit=omit) return - except CannotSplit: + except CannotSplit as e: if not ( can_be_split(body) or is_line_short_enough(body, line_length=line_length) ): raise CannotSplit( "Splitting failed, body is still too long and can't be split." - ) + ) from e elif head.contains_multiline_strings() or tail.contains_multiline_strings(): raise CannotSplit( @@ -518,7 +518,7 @@ def right_hand_split( " satisfy the splitting algorithm because the head or the tail" " contains multiline strings which by definition never fit one" " line." - ) + ) from e ensure_visible(opening_bracket) ensure_visible(closing_bracket) @@ -635,13 +635,13 @@ def delimiter_split(line: Line, features: Collection[Feature] = ()) -> Iterator[ try: last_leaf = line.leaves[-1] except IndexError: - raise CannotSplit("Line empty") + raise CannotSplit("Line empty") from None bt = line.bracket_tracker try: delimiter_priority = bt.max_delimiter_priority(exclude={id(last_leaf)}) except ValueError: - raise CannotSplit("No delimiters found") + raise CannotSplit("No delimiters found") from None if delimiter_priority == DOT_PRIORITY: if bt.delimiter_count_with_priority(delimiter_priority) == 1: diff --git a/src/blackd/__init__.py b/src/blackd/__init__.py index 5fdec15..d062303 100644 --- a/src/blackd/__init__.py +++ b/src/blackd/__init__.py @@ -195,7 +195,7 @@ def parse_python_variant_header(value: str) -> Tuple[bool, Set[black.TargetVersi raise InvalidVariantHeader(f"3.{minor} is not supported") versions.add(black.TargetVersion[version_str]) except (KeyError, ValueError): - raise InvalidVariantHeader("expected e.g. '3.7', 'py3.5'") + raise InvalidVariantHeader("expected e.g. '3.7', 'py3.5'") from None return False, versions