Apply consistent code block labels (#8563)

This ensures the python label is used for all python code blocks for
consistency.

## Test Plan

Visual inspection of all changes via git client ensuring no other
changes were made in error.

crates/ruff_linter/src/checkers/ast/mod.rs

@@ -1415,15 +1415,15 @@ impl<'a> Checker<'a> {
         // subsequent nodes are evaluated in the inner scope.
         //
         // For example, given:
-        // ```py
+        // ```python
         // class A:
         //     T = range(10)
         //
         //     L = [x for x in T for y in T]
         // ```
         //
         // Conceptually, this is compiled as:
-        // ```py
+        // ```python
         // class A:
         //     T = range(10)
         //

crates/ruff_linter/src/importer/insertion.rs

@@ -189,7 +189,7 @@ impl<'a> Insertion<'a> {
                     Tok::NonLogicalNewline => {}
                     Tok::Indent => {
                         // This is like:
-                        // ```py
+                        // ```python
                         // if True:
                         //     pass
                         // ```

crates/ruff_linter/src/importer/mod.rs

@@ -209,7 +209,7 @@ impl<'a> Importer<'a> {
         // We also add a no-op edit to force conflicts with any other fixes that might try to
         // remove the import. Consider:
         //
-        // ```py
+        // ```python
         // import sys
         //
         // quit()

crates/ruff_python_formatter/tests/fixtures.rs

@@ -71,7 +71,7 @@ fn black_compatibility() {
             // today.
             let mut snapshot = String::new();
             write!(snapshot, "{}", Header::new("Input")).unwrap();
-            write!(snapshot, "{}", CodeFrame::new("py", &content)).unwrap();
+            write!(snapshot, "{}", CodeFrame::new("python", &content)).unwrap();
 
             write!(snapshot, "{}", Header::new("Black Differences")).unwrap();
 
@@ -83,10 +83,10 @@ fn black_compatibility() {
             write!(snapshot, "{}", CodeFrame::new("diff", &diff)).unwrap();
 
             write!(snapshot, "{}", Header::new("Ruff Output")).unwrap();
-            write!(snapshot, "{}", CodeFrame::new("py", &formatted_code)).unwrap();
+            write!(snapshot, "{}", CodeFrame::new("python", &formatted_code)).unwrap();
 
             write!(snapshot, "{}", Header::new("Black Output")).unwrap();
-            write!(snapshot, "{}", CodeFrame::new("py", &expected_output)).unwrap();
+            write!(snapshot, "{}", CodeFrame::new("python", &expected_output)).unwrap();
 
             insta::with_settings!({
                 omit_expression => true,
@@ -113,7 +113,7 @@ fn format() {
 
         ensure_stability_when_formatting_twice(formatted_code, options.clone(), input_path);
 
-        let mut snapshot = format!("## Input\n{}", CodeFrame::new("py", &content));
+        let mut snapshot = format!("## Input\n{}", CodeFrame::new("python", &content));
 
         let options_path = input_path.with_extension("options.json");
         if let Ok(options_file) = fs::File::open(options_path) {
@@ -135,7 +135,7 @@ fn format() {
                     "### Output {}\n{}{}",
                     i + 1,
                     CodeFrame::new("", &DisplayPyOptions(&options)),
-                    CodeFrame::new("py", &formatted_code)
+                    CodeFrame::new("python", &formatted_code)
                 )
                 .unwrap();
             }
@@ -159,14 +159,19 @@ fn format() {
             );
 
             if formatted == formatted_preview {
-                writeln!(snapshot, "## Output\n{}", CodeFrame::new("py", &formatted)).unwrap();
+                writeln!(
+                    snapshot,
+                    "## Output\n{}",
+                    CodeFrame::new("python", &formatted)
+                )
+                .unwrap();
             } else {
                 // Having both snapshots makes it hard to see the difference, so we're keeping only
                 // diff.
                 writeln!(
                     snapshot,
                     "## Output\n{}\n## Preview changes\n{}",
-                    CodeFrame::new("py", &formatted),
+                    CodeFrame::new("python", &formatted),
                     CodeFrame::new(
                         "diff",
                         TextDiff::from_lines(formatted, formatted_preview)

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

@@ -4,7 +4,7 @@ input_file: crates/ruff_python_formatter/resources/test/fixtures/black/condition
 ---
 ## Input
 
-```py
+```python
 long_kwargs_single_line = my_function(
     foo="test, this is a sample value",
     bar=some_long_value_name_foo_bar_baz if some_boolean_variable else some_fallback_value_foo_bar_baz,
@@ -149,7 +149,7 @@ def something():
 
 ## Ruff Output
 
-```py
+```python
 long_kwargs_single_line = my_function(
     foo="test, this is a sample value",
     bar=some_long_value_name_foo_bar_baz
@@ -238,7 +238,7 @@ def something():
 
 ## Black Output
 
-```py
+```python
 long_kwargs_single_line = my_function(
     foo="test, this is a sample value",
     bar=(

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

@@ -4,7 +4,7 @@ input_file: crates/ruff_python_formatter/resources/test/fixtures/black/miscellan
 ---
 ## Input
 
-```py
+```python
 def abc ():
     return ["hello", "world",
             "!"]
@@ -33,7 +33,7 @@ print(   "Incorrect formatting"
 
 ## Ruff Output
 
-```py
+```python
 def abc():
     return ["hello", "world", "!"]
 
@@ -43,7 +43,7 @@ print("Incorrect formatting")
 
 ## Black Output
 
-```py
+```python
 def abc ():
     return ["hello", "world",
             "!"]

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

@@ -4,7 +4,7 @@ input_file: crates/ruff_python_formatter/resources/test/fixtures/black/miscellan
 ---
 ## Input
 
-```py
+```python
 @dataclass
 class DebugVisitor(Visitor[T]):
     tree_depth: int = 0
@@ -79,7 +79,7 @@ class DebugVisitor(Visitor[T]):
 
 ## Ruff Output
 
-```py
+```python
 @dataclass
 class DebugVisitor(Visitor[T]):
     tree_depth: int = 0
@@ -116,7 +116,7 @@ class DebugVisitor(Visitor[T]):
 
 ## Black Output
 
-```py
+```python
 @dataclass
 class DebugVisitor(Visitor[T]):
     tree_depth: int = 0

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

@@ -4,7 +4,7 @@ input_file: crates/ruff_python_formatter/resources/test/fixtures/black/miscellan
 ---
 ## Input
 
-```py
+```python
 # This file doesn't use the standard decomposition.
 # Decorator syntax test cases are separated by double # comments.
 # Those before the 'output' comment are valid under the old syntax.
@@ -378,7 +378,7 @@ def f():
 
 ## Ruff Output
 
-```py
+```python
 # This file doesn't use the standard decomposition.
 # Decorator syntax test cases are separated by double # comments.
 # Those before the 'output' comment are valid under the old syntax.
@@ -589,7 +589,7 @@ def f():
 
 ## Black Output
 
-```py
+```python
 ##
 
 @decorator()()

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

@@ -4,7 +4,7 @@ input_file: crates/ruff_python_formatter/resources/test/fixtures/black/miscellan
 ---
 ## Input
 
-```py
+```python
 class ALonelyClass:
     '''
     A multiline class docstring.
@@ -208,7 +208,7 @@ def multiline_backslash_3():
 
 ## Ruff Output
 
-```py
+```python
 class ALonelyClass:
     """
     A multiline class docstring.
@@ -336,7 +336,7 @@ def multiline_backslash_3():
 
 ## Black Output
 
-```py
+```python
 class ALonelyClass:
     '''
     A multiline class docstring.

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

@@ -4,7 +4,7 @@ input_file: crates/ruff_python_formatter/resources/test/fixtures/black/miscellan
 ---
 ## Input
 
-```py
+```python
 def do_not_touch_this_prefix():
     R"""There was a bug where docstring prefixes would be normalized even with -S."""
 
@@ -37,7 +37,7 @@ def do_not_touch_this_prefix3():
 
 ## Ruff Output
 
-```py
+```python
 def do_not_touch_this_prefix():
     R"""There was a bug where docstring prefixes would be normalized even with -S."""
 
@@ -52,7 +52,7 @@ def do_not_touch_this_prefix3():
 
 ## Black Output
 
-```py
+```python
 def do_not_touch_this_prefix():
     R"""There was a bug where docstring prefixes would be normalized even with -S."""
 

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

@@ -4,7 +4,7 @@ input_file: crates/ruff_python_formatter/resources/test/fixtures/black/miscellan
 ---
 ## Input
 
-```py
+```python
 # flags: --pyi
 from typing import Union
 
@@ -119,7 +119,7 @@ def eggs() -> Union[str, int]: ...
 
 ## Ruff Output
 
-```py
+```python
 # flags: --pyi
 from typing import Union
 
@@ -183,7 +183,7 @@ def eggs() -> Union[str, int]:
 
 ## Black Output
 
-```py
+```python
 from typing import Union
 
 @bird

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

@@ -4,7 +4,7 @@ input_file: crates/ruff_python_formatter/resources/test/fixtures/black/miscellan
 ---
 ## Input
 
-```py
+```python
 x = "This is a really long string that can't possibly be expected to fit all together on one line. In fact it may even take up three or more lines... like four or five... but probably just three."
 
 x += "This is a really long string that can't possibly be expected to fit all together on one line. In fact it may even take up three or more lines... like four or five... but probably just three."
@@ -324,7 +324,7 @@ long_unmergable_string_with_pragma = (
 
 ## Ruff Output
 
-```py
+```python
 x = "This is a really long string that can't possibly be expected to fit all together on one line. In fact it may even take up three or more lines... like four or five... but probably just three."
 
 x += "This is a really long string that can't possibly be expected to fit all together on one line. In fact it may even take up three or more lines... like four or five... but probably just three."
@@ -617,7 +617,7 @@ long_unmergable_string_with_pragma = (
 
 ## Black Output
 
-```py
+```python
 x = "This is a really long string that can't possibly be expected to fit all together on one line. In fact it may even take up three or more lines... like four or five... but probably just three."
 
 x += "This is a really long string that can't possibly be expected to fit all together on one line. In fact it may even take up three or more lines... like four or five... but probably just three."

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

@@ -4,7 +4,7 @@ input_file: crates/ruff_python_formatter/resources/test/fixtures/black/miscellan
 ---
 ## Input
 
-```py
+```python
 importA;()<<0**0#
 ```
 
@@ -25,14 +25,14 @@ importA;()<<0**0#
 
 ## Ruff Output
 
-```py
+```python
 importA
 () << 0**0  #
 ```
 
 ## Black Output
 
-```py
+```python
 importA
 (
     ()

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

@@ -4,7 +4,7 @@ input_file: crates/ruff_python_formatter/resources/test/fixtures/black/miscellan
 ---
 ## Input
 
-```py
+```python
 ''''''
 
 '\''
@@ -88,7 +88,7 @@ f"\"{a}\"{'hello' * b}\"{c}\""
 
 ## Ruff Output
 
-```py
+```python
 """"""
 
 "'"
@@ -151,7 +151,7 @@ f"\"{a}\"{'hello' * b}\"{c}\""
 
 ## Black Output
 
-```py
+```python
 """"""
 
 "'"

crates/ruff_python_formatter/tests/snapshots/black_compatibility@py_310__pattern_matching_extras.py.snap

@@ -4,7 +4,7 @@ input_file: crates/ruff_python_formatter/resources/test/fixtures/black/py_310/pa
 ---
 ## Input
 
-```py
+```python
 import match
 
 match something:
@@ -162,7 +162,7 @@ match bar1:
 
 ## Ruff Output
 
-```py
+```python
 import match
 
 match something:
@@ -295,7 +295,7 @@ match bar1:
 
 ## Black Output
 
-```py
+```python
 import match
 
 match something: