From 0161da9d6d87febef30d74905c78e04edccb50b1 Mon Sep 17 00:00:00 2001
From: "Ralf W. Grosse-Kunstleve" <rwgkio@gmail.com>
Date: Sat, 27 Sep 2025 13:12:56 -0700
Subject: [PATCH] [skip ci] .gitignore: exclude __pycache__ directories (#5838)
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Python may leave behind temporary `.pyc.*` files inside `__pycache__`
on some filesystems (e.g. WSL2 mounts). Adding `__pycache__/` ensures
these directories and any leftover files are consistently ignored.

Background: Python writes bytecode to a temp file with an extra suffix
before renaming it to `.pyc`. If the process is interrupted or the
filesystem rename isn’t fully atomic, those temp files may remain.

See: https://docs.python.org/3/library/py_compile.html#py_compile.compile
---
 .gitignore | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.gitignore b/.gitignore
index 5875be36a..b007bb19a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -26,6 +26,7 @@ MANIFEST
 /.ninja_*
 /*.ninja
 /docs/.build
+__pycache__/
 *.py[co]
 *.egg-info
 *~