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Simplify black code by using generator expressions

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Yurii Karabas 2020-06-24 00:33:05 +03:00 committed by Łukasz Langa
parent 20f74c20f7
commit 1ebe9b70c5
1 changed files with 21 additions and 23 deletions
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44
src/black/__init__.py
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@ -641,10 +641,9 @@ def path_empty(
"""
Exit if there is no `src` provided for formatting
"""
if len(src) == 0:
if verbose or not quiet:
out(msg)
ctx.exit(0)
if not src and (verbose or not quiet):
out(msg)
ctx.exit(0)
def reformat_one(
@ -928,7 +927,7 @@ def format_file_contents(src_contents: str, *, fast: bool, mode: Mode) -> FileCo
valid by calling :func:`assert_equivalent` and :func:`assert_stable` on it.
`mode` is passed to :func:`format_str`.
"""
if src_contents.strip() == "":
if not src_contents.strip():
raise NothingChanged
dst_contents = format_str(src_contents, mode=mode)
@ -1062,7 +1061,7 @@ def get_grammars(target_versions: Set[TargetVersion]) -> List[Grammar]:
def lib2to3_parse(src_txt: str, target_versions: Iterable[TargetVersion] = ()) -> Node:
"""Given a string with source, return the lib2to3 Node."""
if src_txt[-1:] != "\n":
if not src_txt.endswith("\n"):
src_txt += "\n"
for grammar in get_grammars(set(target_versions)):
@ -1547,11 +1546,10 @@ def is_triple_quoted_string(self) -> bool:
def contains_standalone_comments(self, depth_limit: int = sys.maxsize) -> bool:
"""If so, needs to be split before emitting."""
for leaf in self.leaves:
if leaf.type == STANDALONE_COMMENT and leaf.bracket_depth <= depth_limit:
return True
return False
return any(
leaf.type == STANDALONE_COMMENT and leaf.bracket_depth <= depth_limit
for leaf in self.leaves
)
def contains_uncollapsable_type_comments(self) -> bool:
ignored_ids = set()
@ -3992,12 +3990,13 @@ class StringParenWrapper(CustomSplitMapMixin, BaseStringSplitter):
def do_splitter_match(self, line: Line) -> TMatchResult:
LL = line.leaves
string_idx = None
string_idx = string_idx or self._return_match(LL)
string_idx = string_idx or self._else_match(LL)
string_idx = string_idx or self._assert_match(LL)
string_idx = string_idx or self._assign_match(LL)
string_idx = string_idx or self._dict_match(LL)
string_idx = (
self._return_match(LL)
or self._else_match(LL)
or self._assert_match(LL)
or self._assign_match(LL)
or self._dict_match(LL)
)
if string_idx is not None:
string_value = line.leaves[string_idx].value
@ -4196,7 +4195,7 @@ def do_transform(self, line: Line, string_idx: int) -> Iterator[TResult[Line]]:
is_valid_index = is_valid_index_factory(LL)
insert_str_child = insert_str_child_factory(LL[string_idx])
comma_idx = len(LL) - 1
comma_idx = -1
ends_with_comma = False
if LL[comma_idx].type == token.COMMA:
ends_with_comma = True
@ -4444,11 +4443,10 @@ def contains_pragma_comment(comment_list: List[Leaf]) -> bool:
of the more common static analysis tools for python (e.g. mypy, flake8,
pylint).
"""
for comment in comment_list:
if comment.value.startswith(("# type:", "# noqa", "# pylint:")):
return True
return False
return any(
comment.value.startswith(("# type:", "# noqa", "# pylint:"))
for comment in comment_list
)
def insert_str_child_factory(string_leaf: Leaf) -> Callable[[LN], None]: