From 981926035cade84b049dd50ca0c91dca0b7ac4e5 Mon Sep 17 00:00:00 2001
From: mrbean-bremen <hansemrbean@googlemail.com>
Date: Tue, 24 Dec 2024 10:02:27 +0100
Subject: [PATCH] Fix an error from mypy

- looks like a bug in mypy
---
 pyfakefs/fake_filesystem.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/pyfakefs/fake_filesystem.py b/pyfakefs/fake_filesystem.py
index 1f8f536e..fde46a68 100644
--- a/pyfakefs/fake_filesystem.py
+++ b/pyfakefs/fake_filesystem.py
@@ -2902,7 +2902,8 @@ def makedirs(
             if not exist_ok or not isinstance(self.resolve(dir_name), FakeDirectory):
                 if self.is_windows_fs and e.errno == errno.ENOTDIR:
                     e.errno = errno.ENOENT
-                self.raise_os_error(e.errno, e.filename)
+                # mypy thinks that errno may be None
+                self.raise_os_error(cast(int, e.errno), e.filename)
 
     def _is_of_type(
         self,