From 2abab2a91ae4c2f9b31fb589ee0b6cd7a91dd7d7 Mon Sep 17 00:00:00 2001
From: dgw <dgw@technobabbl.es>
Date: Wed, 18 Jun 2025 21:36:01 -0500
Subject: [PATCH] Add I301 check for `if TYPE_CHECKING:` separated from other
 imports

---
 flake8_import_order/styles.py              | 11 ++++++++++-
 tests/test_cases/type_checking_orphaned.py | 11 +++++++++++
 2 files changed, 21 insertions(+), 1 deletion(-)
 create mode 100644 tests/test_cases/type_checking_orphaned.py

diff --git a/flake8_import_order/styles.py b/flake8_import_order/styles.py
index 5240477..95f420b 100644
--- a/flake8_import_order/styles.py
+++ b/flake8_import_order/styles.py
@@ -48,6 +48,7 @@ def _check(self, previous_import, previous, current_import):
             and current_import.type_checking
         ):
             yield from self._check_I300(previous_import, current_import)
+            yield from self._check_I301(previous_import, current_import)
             previous_import = None
         if previous_import is not None:
             yield from self._check_I100(previous_import, current_import)
@@ -78,13 +79,21 @@ def _check_I101(self, current_import):  # noqa: N802
             )
 
     def _check_I300(self, previous_import, current_import):  # noqa: N802
-        if current_import.lineno - previous_import.end_lineno != 3:
+        if current_import.lineno - previous_import.end_lineno < 3:
             yield Error(
                 current_import.lineno,
                 "I300",
                 "TYPE_CHECKING block should have one newline above.",
             )
 
+    def _check_I301(self, previous_import, current_import):  # noqa: N802
+        if current_import.lineno - previous_import.end_lineno > 3:
+            yield Error(
+                current_import.lineno,
+                "I301",
+                "TYPE_CHECKING block should have no more than one newline above.",
+            )
+
     def _check_I100(self, previous_import, current_import):  # noqa: N802
         previous_key = self.import_key(previous_import)
         current_key = self.import_key(current_import)
diff --git a/tests/test_cases/type_checking_orphaned.py b/tests/test_cases/type_checking_orphaned.py
new file mode 100644
index 0000000..0488168
--- /dev/null
+++ b/tests/test_cases/type_checking_orphaned.py
@@ -0,0 +1,11 @@
+# cryptography edited google pep8 smarkets
+from typing import TYPE_CHECKING
+
+import pytest
+
+from . import localpackage
+
+CONST = localpackage.CONST
+
+if TYPE_CHECKING:
+    import ast  # I301