On 11 May 2020, at 18:09, Andrew Barnert via Python-ideas <python-ideas@python.org> wrote:More generally, what’s the use case for %-encoding filenames like this? Are people expecting it to interact transparently with URLs, so if I save a file “spam\0eggs” in a Python script and then try to browse to file:///spam\0eggs” in a browser, the browser will convert the \0 character to %00 the same way my Python script did and therefore find the file?No.The \0 can never be part of a valid file in Unix, macOS or Windows.