[isort] support for configurable import section heading comments

crates/ruff/tests/cli/snapshots/cli__lint__requires_python_extend_from_shared_config.snap

@@ -208,6 +208,7 @@ linter.isort.classes = []
 linter.isort.constants = []
 linter.isort.variables = []
 linter.isort.no_lines_before = []
+linter.isort.import_headings = {}
 linter.isort.lines_after_imports = -1
 linter.isort.lines_between_types = 0
 linter.isort.forced_separate = []

crates/ruff/tests/cli/snapshots/cli__lint__requires_python_no_tool.snap

@@ -210,6 +210,7 @@ linter.isort.classes = []
 linter.isort.constants = []
 linter.isort.variables = []
 linter.isort.no_lines_before = []
+linter.isort.import_headings = {}
 linter.isort.lines_after_imports = -1
 linter.isort.lines_between_types = 0
 linter.isort.forced_separate = []

crates/ruff/tests/cli/snapshots/cli__lint__requires_python_no_tool_preview_enabled.snap

@@ -212,6 +212,7 @@ linter.isort.classes = []
 linter.isort.constants = []
 linter.isort.variables = []
 linter.isort.no_lines_before = []
+linter.isort.import_headings = {}
 linter.isort.lines_after_imports = -1
 linter.isort.lines_between_types = 0
 linter.isort.forced_separate = []

crates/ruff/tests/cli/snapshots/cli__lint__requires_python_no_tool_target_version_override.snap

@@ -212,6 +212,7 @@ linter.isort.classes = []
 linter.isort.constants = []
 linter.isort.variables = []
 linter.isort.no_lines_before = []
+linter.isort.import_headings = {}
 linter.isort.lines_after_imports = -1
 linter.isort.lines_between_types = 0
 linter.isort.forced_separate = []

crates/ruff/tests/cli/snapshots/cli__lint__requires_python_pyproject_toml_above.snap

@@ -209,6 +209,7 @@ linter.isort.classes = []
 linter.isort.constants = []
 linter.isort.variables = []
 linter.isort.no_lines_before = []
+linter.isort.import_headings = {}
 linter.isort.lines_after_imports = -1
 linter.isort.lines_between_types = 0
 linter.isort.forced_separate = []

crates/ruff/tests/cli/snapshots/cli__lint__requires_python_pyproject_toml_above_with_tool.snap

@@ -209,6 +209,7 @@ linter.isort.classes = []
 linter.isort.constants = []
 linter.isort.variables = []
 linter.isort.no_lines_before = []
+linter.isort.import_headings = {}
 linter.isort.lines_after_imports = -1
 linter.isort.lines_between_types = 0
 linter.isort.forced_separate = []

crates/ruff/tests/cli/snapshots/cli__lint__requires_python_ruff_toml_above-2.snap

@@ -208,6 +208,7 @@ linter.isort.classes = []
 linter.isort.constants = []
 linter.isort.variables = []
 linter.isort.no_lines_before = []
+linter.isort.import_headings = {}
 linter.isort.lines_after_imports = -1
 linter.isort.lines_between_types = 0
 linter.isort.forced_separate = []

crates/ruff/tests/cli/snapshots/cli__lint__requires_python_ruff_toml_above.snap

@@ -208,6 +208,7 @@ linter.isort.classes = []
 linter.isort.constants = []
 linter.isort.variables = []
 linter.isort.no_lines_before = []
+linter.isort.import_headings = {}
 linter.isort.lines_after_imports = -1
 linter.isort.lines_between_types = 0
 linter.isort.forced_separate = []

crates/ruff/tests/cli/snapshots/cli__lint__requires_python_ruff_toml_no_target_fallback.snap

@@ -208,6 +208,7 @@ linter.isort.classes = []
 linter.isort.constants = []
 linter.isort.variables = []
 linter.isort.no_lines_before = []
+linter.isort.import_headings = {}
 linter.isort.lines_after_imports = -1
 linter.isort.lines_between_types = 0
 linter.isort.forced_separate = []

crates/ruff/tests/snapshots/show_settings__display_default_settings.snap

@@ -321,6 +321,7 @@ linter.isort.classes = []
 linter.isort.constants = []
 linter.isort.variables = []
 linter.isort.no_lines_before = []
+linter.isort.import_headings = {}
 linter.isort.lines_after_imports = -1
 linter.isort.lines_between_types = 0
 linter.isort.forced_separate = []

crates/ruff_linter/resources/test/fixtures/isort/import_heading.py

@@ -0,0 +1,11 @@
+from __future__ import annotations
+
+import os
+import sys
+
+import requests
+import pandas
+
+from my_first_party import my_first_party_object
+
+from . import my_local_folder_object

crates/ruff_linter/resources/test/fixtures/isort/import_heading_already_correct.py

@@ -0,0 +1,16 @@
+# Future imports
+from __future__ import annotations
+
+# Standard library imports
+import os
+import sys
+
+# Third party imports
+import pandas
+import requests
+
+# First party imports
+from my_first_party import my_first_party_object
+
+# Local folder imports
+from . import my_local_folder_object

crates/ruff_linter/resources/test/fixtures/isort/import_heading_already_present.py

@@ -0,0 +1,15 @@
+# Future imports
+from __future__ import annotations
+
+# Standard library imports
+import os
+import sys
+
+# Third party imports
+import requests
+import pandas
+
+# First party imports
+from my_first_party import my_first_party_object
+
+from . import my_local_folder_object

crates/ruff_linter/resources/test/fixtures/isort/import_heading_force_sort_within_sections.py

@@ -0,0 +1,5 @@
+from __future__ import annotations
+from typing import Any
+
+import requests
+import pandas

crates/ruff_linter/resources/test/fixtures/isort/import_heading_partial.py

@@ -0,0 +1,5 @@
+import os
+import sys
+
+import requests
+import pandas

crates/ruff_linter/resources/test/fixtures/isort/import_heading_single_section.py

@@ -0,0 +1,2 @@
+import requests
+import pandas

crates/ruff_linter/resources/test/fixtures/isort/import_heading_unsorted.py

@@ -0,0 +1,7 @@
+import pandas
+import os
+from __future__ import annotations
+import sys
+import requests
+from my_first_party import my_first_party_object
+from . import my_local_folder_object

crates/ruff_linter/resources/test/fixtures/isort/import_heading_with_no_lines_before.py

@@ -0,0 +1,11 @@
+from __future__ import annotations
+
+import os
+import sys
+
+import requests
+import pandas
+
+from my_first_party import my_first_party_object
+
+from . import my_local_folder_object

crates/ruff_linter/resources/test/fixtures/isort/import_heading_wrong_heading.py

@@ -0,0 +1,9 @@
+# Wrong heading
+import os
+import sys
+
+# Also wrong heading
+import pandas
+import requests
+
+from my_first_party import my_first_party_object