Change lambda dummy to NOT_YET_IMPLEMENTED_lambda (#5687)

This only changes the dummy to be easier to identify.

crates/ruff_python_formatter/src/expression/expr_lambda.rs

@@ -11,7 +11,12 @@ pub struct FormatExprLambda;
 
 impl FormatNodeRule<ExprLambda> for FormatExprLambda {
     fn fmt_fields(&self, _item: &ExprLambda, f: &mut PyFormatter) -> FormatResult<()> {
-        write!(f, [not_yet_implemented_custom_text("lambda x: True")])
+        write!(
+            f,
+            [not_yet_implemented_custom_text(
+                "lambda NOT_YET_IMPLEMENTED_lambda: True"
+            )]
+        )
     }
 }
 

crates/ruff_python_formatter/tests/snapshots/black_compatibility@py_38__pep_570.py.snap

@@ -61,16 +61,16 @@ lambda a, b=1, /, c=2, d=3, *, e=4, f=5: 1
  
  
 -lambda a, /: a
-+lambda x: True
++lambda NOT_YET_IMPLEMENTED_lambda: True
  
 -lambda a, b, /, c, d, *, e, f: a
-+lambda x: True
++lambda NOT_YET_IMPLEMENTED_lambda: True
  
 -lambda a, b, /, c, d, *args, e, f, **kwargs: args
-+lambda x: True
++lambda NOT_YET_IMPLEMENTED_lambda: True
  
 -lambda a, b=1, /, c=2, d=3, *, e=4, f=5: 1
-+lambda x: True
++lambda NOT_YET_IMPLEMENTED_lambda: True
 ```
 
 ## Ruff Output
@@ -113,13 +113,13 @@ def long_one_with_long_parameter_names(
     pass
 
 
-lambda x: True
+lambda NOT_YET_IMPLEMENTED_lambda: True
 
-lambda x: True
+lambda NOT_YET_IMPLEMENTED_lambda: True
 
-lambda x: True
+lambda NOT_YET_IMPLEMENTED_lambda: True
 
-lambda x: True
+lambda NOT_YET_IMPLEMENTED_lambda: True
 ```
 
 ## Black Output

crates/ruff_python_formatter/tests/snapshots/black_compatibility@py_38__pep_572.py.snap

@@ -76,10 +76,10 @@ while x := f(x):
 -(x := lambda: 1)
 -(x := lambda: (y := 1))
 -lambda line: (m := re.match(pattern, line)) and m.group(1)
-+lambda x: True
-+(x := lambda x: True)
-+(x := lambda x: True)
-+lambda x: True
++lambda NOT_YET_IMPLEMENTED_lambda: True
++(x := lambda NOT_YET_IMPLEMENTED_lambda: True)
++(x := lambda NOT_YET_IMPLEMENTED_lambda: True)
++lambda NOT_YET_IMPLEMENTED_lambda: True
  x = (y := 0)
  (z := (y := (x := 0)))
  (info := (name, phone, *rest))
@@ -132,10 +132,10 @@ def foo(answer: (p := 42) = 5):
     pass
 
 
-lambda x: True
-(x := lambda x: True)
-(x := lambda x: True)
-lambda x: True
+lambda NOT_YET_IMPLEMENTED_lambda: True
+(x := lambda NOT_YET_IMPLEMENTED_lambda: True)
+(x := lambda NOT_YET_IMPLEMENTED_lambda: True)
+lambda NOT_YET_IMPLEMENTED_lambda: True
 x = (y := 0)
 (z := (y := (x := 0)))
 (info := (name, phone, *rest))

crates/ruff_python_formatter/tests/snapshots/black_compatibility@simple_cases__bracketmatch.py.snap

@@ -23,8 +23,8 @@ lambda x=lambda y={1: 3}: y['x':lambda y: {1: 2}]: x
      pass
 -pem_spam = lambda l, spam={"x": 3}: not spam.get(l.strip())
 -lambda x=lambda y={1: 3}: y["x" : lambda y: {1: 2}]: x
-+pem_spam = lambda x: True
-+lambda x: True
++pem_spam = lambda NOT_YET_IMPLEMENTED_lambda: True
++lambda NOT_YET_IMPLEMENTED_lambda: True
 ```
 
 ## Ruff Output
@@ -32,8 +32,8 @@ lambda x=lambda y={1: 3}: y['x':lambda y: {1: 2}]: x
 ```py
 for ((x in {}) or {})["a"] in x:
     pass
-pem_spam = lambda x: True
-lambda x: True
+pem_spam = lambda NOT_YET_IMPLEMENTED_lambda: True
+lambda NOT_YET_IMPLEMENTED_lambda: True
 ```
 
 ## Black Output

crates/ruff_python_formatter/tests/snapshots/black_compatibility@simple_cases__expression.py.snap

@@ -291,13 +291,13 @@ last_call()
 -    "port1": port1_resource,
 -    "port2": port2_resource,
 -}[port_id]
-+lambda x: True
-+lambda x: True
-+lambda x: True
-+lambda x: True
-+lambda x: True
-+manylambdas = lambda x: True
-+foo = lambda x: True
++lambda NOT_YET_IMPLEMENTED_lambda: True
++lambda NOT_YET_IMPLEMENTED_lambda: True
++lambda NOT_YET_IMPLEMENTED_lambda: True
++lambda NOT_YET_IMPLEMENTED_lambda: True
++lambda NOT_YET_IMPLEMENTED_lambda: True
++manylambdas = lambda NOT_YET_IMPLEMENTED_lambda: True
++foo = lambda NOT_YET_IMPLEMENTED_lambda: True
  1 if True else 2
  str or None if True else str or bytes or None
  (str or None) if True else (str or bytes or None)
@@ -494,7 +494,7 @@ last_call()
 +    if False
 +    else {NOT_IMPLEMENTED_dict_key: NOT_IMPLEMENTED_dict_value for key, value in NOT_IMPLEMENTED_dict}
 +)
-+print(*lambda x: True)
++print(*lambda NOT_YET_IMPLEMENTED_lambda: True)
 +NOT_YET_IMPLEMENTED_StmtAssert
 +NOT_YET_IMPLEMENTED_StmtAssert
 +NOT_YET_IMPLEMENTED_StmtAssert
@@ -581,13 +581,13 @@ not great
 (~int) and (not ((v1 ^ (123 + v2)) | True))
 +really ** -confusing ** ~operator**-precedence
 flags & ~select.EPOLLIN and waiters.write_task is not None
-lambda x: True
-lambda x: True
-lambda x: True
-lambda x: True
-lambda x: True
-manylambdas = lambda x: True
-foo = lambda x: True
+lambda NOT_YET_IMPLEMENTED_lambda: True
+lambda NOT_YET_IMPLEMENTED_lambda: True
+lambda NOT_YET_IMPLEMENTED_lambda: True
+lambda NOT_YET_IMPLEMENTED_lambda: True
+lambda NOT_YET_IMPLEMENTED_lambda: True
+manylambdas = lambda NOT_YET_IMPLEMENTED_lambda: True
+foo = lambda NOT_YET_IMPLEMENTED_lambda: True
 1 if True else 2
 str or None if True else str or bytes or None
 (str or None) if True else (str or bytes or None)
@@ -785,7 +785,7 @@ print(
     if False
     else {NOT_IMPLEMENTED_dict_key: NOT_IMPLEMENTED_dict_value for key, value in NOT_IMPLEMENTED_dict}
 )
-print(*lambda x: True)
+print(*lambda NOT_YET_IMPLEMENTED_lambda: True)
 NOT_YET_IMPLEMENTED_StmtAssert
 NOT_YET_IMPLEMENTED_StmtAssert
 NOT_YET_IMPLEMENTED_StmtAssert

crates/ruff_python_formatter/tests/snapshots/black_compatibility@simple_cases__fmtonoff.py.snap

@@ -271,7 +271,7 @@ d={'a':1,
  def spaces(a=1, b=(), c=[], d={}, e=True, f=-1, g=1 if False else 2, h="", i=r""):
 -    offset = attr.ib(default=attr.Factory(lambda: _r.uniform(1, 2)))
 -    assert task._cancel_stack[: len(old_stack)] == old_stack
-+    offset = attr.ib(default=attr.Factory(lambda x: True))
++    offset = attr.ib(default=attr.Factory(lambda NOT_YET_IMPLEMENTED_lambda: True))
 +    NOT_YET_IMPLEMENTED_StmtAssert
  
  
@@ -457,7 +457,7 @@ def function_signature_stress_test(
 
 # fmt: on
 def spaces(a=1, b=(), c=[], d={}, e=True, f=-1, g=1 if False else 2, h="", i=r""):
-    offset = attr.ib(default=attr.Factory(lambda x: True))
+    offset = attr.ib(default=attr.Factory(lambda NOT_YET_IMPLEMENTED_lambda: True))
     NOT_YET_IMPLEMENTED_StmtAssert
 
 

crates/ruff_python_formatter/tests/snapshots/black_compatibility@simple_cases__function.py.snap

@@ -128,7 +128,7 @@ def __await__(): return (yield)
  def spaces(a=1, b=(), c=[], d={}, e=True, f=-1, g=1 if False else 2, h="", i=r""):
 -    offset = attr.ib(default=attr.Factory(lambda: _r.uniform(10000, 200000)))
 -    assert task._cancel_stack[: len(old_stack)] == old_stack
-+    offset = attr.ib(default=attr.Factory(lambda x: True))
++    offset = attr.ib(default=attr.Factory(lambda NOT_YET_IMPLEMENTED_lambda: True))
 +    NOT_YET_IMPLEMENTED_StmtAssert
  
  
@@ -229,7 +229,7 @@ def function_signature_stress_test(
 
 
 def spaces(a=1, b=(), c=[], d={}, e=True, f=-1, g=1 if False else 2, h="", i=r""):
-    offset = attr.ib(default=attr.Factory(lambda x: True))
+    offset = attr.ib(default=attr.Factory(lambda NOT_YET_IMPLEMENTED_lambda: True))
     NOT_YET_IMPLEMENTED_StmtAssert
 
 

crates/ruff_python_formatter/tests/snapshots/black_compatibility@simple_cases__power_op_spacing.py.snap

@@ -80,7 +80,7 @@ return np.divide(
  c = -(5**2)
  d = 5 ** f["hi"]
 -e = lazy(lambda **kwargs: 5)
-+e = lazy(lambda x: True)
++e = lazy(lambda NOT_YET_IMPLEMENTED_lambda: True)
  f = f() ** 5
  g = a.b**c.d
  h = 5 ** funcs.f()
@@ -98,7 +98,7 @@ return np.divide(
  c = -(5.0**2.0)
  d = 5.0 ** f["hi"]
 -e = lazy(lambda **kwargs: 5)
-+e = lazy(lambda x: True)
++e = lazy(lambda NOT_YET_IMPLEMENTED_lambda: True)
  f = f() ** 5.0
  g = a.b**c.d
  h = 5.0 ** funcs.f()
@@ -147,7 +147,7 @@ a = 5**~4
 b = 5 ** f()
 c = -(5**2)
 d = 5 ** f["hi"]
-e = lazy(lambda x: True)
+e = lazy(lambda NOT_YET_IMPLEMENTED_lambda: True)
 f = f() ** 5
 g = a.b**c.d
 h = 5 ** funcs.f()
@@ -166,7 +166,7 @@ a = 5.0**~4.0
 b = 5.0 ** f()
 c = -(5.0**2.0)
 d = 5.0 ** f["hi"]
-e = lazy(lambda x: True)
+e = lazy(lambda NOT_YET_IMPLEMENTED_lambda: True)
 f = f() ** 5.0
 g = a.b**c.d
 h = 5.0 ** funcs.f()

crates/ruff_python_formatter/tests/snapshots/black_compatibility@simple_cases__remove_for_brackets.py.snap

@@ -36,7 +36,7 @@ for (((((k, v))))) in d.items():
  for module in (core, _unicodefun):
      if hasattr(module, "_verify_python3_env"):
 -        module._verify_python3_env = lambda: None
-+        module._verify_python3_env = lambda x: True
++        module._verify_python3_env = lambda NOT_YET_IMPLEMENTED_lambda: True
  
  # Brackets remain for long for loop lines
  for (
@@ -63,7 +63,7 @@ for k, v in d.items():
 # Don't touch tuple brackets after `in`
 for module in (core, _unicodefun):
     if hasattr(module, "_verify_python3_env"):
-        module._verify_python3_env = lambda x: True
+        module._verify_python3_env = lambda NOT_YET_IMPLEMENTED_lambda: True
 
 # Brackets remain for long for loop lines
 for (

crates/ruff_python_formatter/tests/snapshots/black_compatibility@simple_cases__slices.py.snap

@@ -59,8 +59,8 @@ ham[lower + offset : upper + offset]
 -slice[lambda: None : lambda: None]
 -slice[lambda x, y, *args, really=2, **kwargs: None :, None::]
 +slice[ : -1 :]
-+slice[lambda x: True : lambda x: True]
-+slice[lambda x: True :, None::]
++slice[lambda NOT_YET_IMPLEMENTED_lambda: True : lambda NOT_YET_IMPLEMENTED_lambda: True]
++slice[lambda NOT_YET_IMPLEMENTED_lambda: True :, None::]
  slice[1 or 2 : True and False]
  slice[not so_simple : 1 < val <= 10]
 -slice[(1 for i in range(42)) : x]
@@ -97,8 +97,8 @@ slice[c, c + 1, d::]
 slice[ham[c::d] :: 1]
 slice[ham[cheese**2 : -1] : 1 : 1, ham[1:2]]
 slice[ : -1 :]
-slice[lambda x: True : lambda x: True]
-slice[lambda x: True :, None::]
+slice[lambda NOT_YET_IMPLEMENTED_lambda: True : lambda NOT_YET_IMPLEMENTED_lambda: True]
+slice[lambda NOT_YET_IMPLEMENTED_lambda: True :, None::]
 slice[1 or 2 : True and False]
 slice[not so_simple : 1 < val <= 10]
 slice[