[LyX/master] ePub: comment about subprocess.run instead of os.system to simplify code.

[Thibaut Cuvelier]

commit 0b50da7321a942b58142ff4256b5102922411b08
Author: Thibaut Cuvelier <tcuvelier at lyx.org>
Date:   Sun Feb 7 06:35:42 2021 +0100

    ePub: comment about subprocess.run instead of os.system to simplify code.
---
 lib/scripts/docbook2epub.py |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/lib/scripts/docbook2epub.py b/lib/scripts/docbook2epub.py
index da2fbf9..9354b83 100644
--- a/lib/scripts/docbook2epub.py
+++ b/lib/scripts/docbook2epub.py
@@ -51,6 +51,7 @@ if __name__ == '__main__':
         # On Windows, it is typical to have spaces in folder names, and that requires to wrap the whole command
         # in quotes. On Linux, this might create errors when starting the command.
         quoted_command = '"' + command + '"'
+    # This could be simplified by using subprocess.run, but this requires Python 3.5.
 
     if os.system(quoted_command) != 0:
         print('docbook2epub fails')