From: Guido van Rossum <guido@python.org>
Date: Mon, 13 May 2019 12:31:30 +0000 (-0700)
Subject: bpo-36807: When saving a file in IDLE, call flush and fsync (#13102)
X-Git-Tag: v3.8.0b1~391
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=4f098b35f58e911639f8e9adc393d5cf5c792e7f;p=python

bpo-36807: When saving a file in IDLE, call flush and fsync (#13102)
---

diff --git a/Lib/idlelib/iomenu.py b/Lib/idlelib/iomenu.py
index f5bced597a..b9e813be06 100644
--- a/Lib/idlelib/iomenu.py
+++ b/Lib/idlelib/iomenu.py
@@ -384,6 +384,8 @@ class IOBinding:
         try:
             with open(filename, "wb") as f:
                 f.write(chars)
+                f.flush()
+                os.fsync(f.fileno())
             return True
         except OSError as msg:
             tkMessageBox.showerror("I/O Error", str(msg),
diff --git a/Misc/NEWS.d/next/IDLE/2019-05-05-16-27-53.bpo-13102.AGNWYJ.rst b/Misc/NEWS.d/next/IDLE/2019-05-05-16-27-53.bpo-13102.AGNWYJ.rst
new file mode 100644
index 0000000000..18b31b1fe5
--- /dev/null
+++ b/Misc/NEWS.d/next/IDLE/2019-05-05-16-27-53.bpo-13102.AGNWYJ.rst
@@ -0,0 +1 @@
+When saving a file, call os.flush() so bits are flushed to e.g. USB drive.