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black_compatibility@cases__preview_dummy_implementations.py.snap
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black_compatibility@cases__preview_dummy_implementations.py.snap
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---
source: crates/ruff_python_formatter/tests/fixtures.rs
input_file: crates/ruff_python_formatter/resources/test/fixtures/black/cases/preview_dummy_implementations.py
---
## Input
```python
from typing import NoReturn, Protocol, Union, overload
class Empty:
...
def dummy(a): ...
async def other(b): ...
@overload
def a(arg: int) -> int: ...
@overload
def a(arg: str) -> str: ...
@overload
def a(arg: object) -> NoReturn: ...
def a(arg: Union[int, str, object]) -> Union[int, str]:
if not isinstance(arg, (int, str)):
raise TypeError
return arg
class Proto(Protocol):
def foo(self, a: int) -> int:
...
def bar(self, b: str) -> str: ...
def baz(self, c: bytes) -> str:
...
def dummy_two():
...
@dummy
def dummy_three():
...
def dummy_four():
...
@overload
def b(arg: int) -> int: ...
@overload
def b(arg: str) -> str: ...
@overload
def b(arg: object) -> NoReturn: ...
def b(arg: Union[int, str, object]) -> Union[int, str]:
if not isinstance(arg, (int, str)):
raise TypeError
return arg
def has_comment():
... # still a dummy
if some_condition:
...
if already_dummy: ...
```
## Black Differences
```diff
--- Black
+++ Ruff
@@ -5,15 +5,23 @@
def dummy(a): ...
+
+
async def other(b): ...
@overload
def a(arg: int) -> int: ...
+
+
@overload
def a(arg: str) -> str: ...
+
+
@overload
def a(arg: object) -> NoReturn: ...
+
+
def a(arg: Union[int, str, object]) -> Union[int, str]:
if not isinstance(arg, (int, str)):
raise TypeError
@@ -24,10 +32,13 @@
def foo(self, a: int) -> int: ...
def bar(self, b: str) -> str: ...
+
def baz(self, c: bytes) -> str: ...
def dummy_two(): ...
+
+
@dummy
def dummy_three(): ...
@@ -41,6 +52,8 @@
@overload
def b(arg: str) -> str: ...
+
+
@overload
def b(arg: object) -> NoReturn: ...
@@ -54,8 +67,6 @@
def has_comment(): ... # still a dummy
-if some_condition:
- ...
+if some_condition: ...
-if already_dummy:
- ...
+if already_dummy: ...
```
## Ruff Output
```python
from typing import NoReturn, Protocol, Union, overload
class Empty: ...
def dummy(a): ...
async def other(b): ...
@overload
def a(arg: int) -> int: ...
@overload
def a(arg: str) -> str: ...
@overload
def a(arg: object) -> NoReturn: ...
def a(arg: Union[int, str, object]) -> Union[int, str]:
if not isinstance(arg, (int, str)):
raise TypeError
return arg
class Proto(Protocol):
def foo(self, a: int) -> int: ...
def bar(self, b: str) -> str: ...
def baz(self, c: bytes) -> str: ...
def dummy_two(): ...
@dummy
def dummy_three(): ...
def dummy_four(): ...
@overload
def b(arg: int) -> int: ...
@overload
def b(arg: str) -> str: ...
@overload
def b(arg: object) -> NoReturn: ...
def b(arg: Union[int, str, object]) -> Union[int, str]:
if not isinstance(arg, (int, str)):
raise TypeError
return arg
def has_comment(): ... # still a dummy
if some_condition: ...
if already_dummy: ...
```
## Black Output
```python
from typing import NoReturn, Protocol, Union, overload
class Empty: ...
def dummy(a): ...
async def other(b): ...
@overload
def a(arg: int) -> int: ...
@overload
def a(arg: str) -> str: ...
@overload
def a(arg: object) -> NoReturn: ...
def a(arg: Union[int, str, object]) -> Union[int, str]:
if not isinstance(arg, (int, str)):
raise TypeError
return arg
class Proto(Protocol):
def foo(self, a: int) -> int: ...
def bar(self, b: str) -> str: ...
def baz(self, c: bytes) -> str: ...
def dummy_two(): ...
@dummy
def dummy_three(): ...
def dummy_four(): ...
@overload
def b(arg: int) -> int: ...
@overload
def b(arg: str) -> str: ...
@overload
def b(arg: object) -> NoReturn: ...
def b(arg: Union[int, str, object]) -> Union[int, str]:
if not isinstance(arg, (int, str)):
raise TypeError
return arg
def has_comment(): ... # still a dummy
if some_condition:
...
if already_dummy:
...
```