STINNER Victor <vstin...@redhat.com> added the comment:
subprocess.Popen calls _winapi.CreateProcess. The current_directory is a wchar_t* string (Py_UNICODE*) passed to Windows CreateProcessW() (Unicode flavor of the API). https://docs.microsoft.com/en-us/windows/desktop/fileio/naming-a-file#maximum-path-length-limitation "In the Windows API (with some exceptions discussed in the following paragraphs), the maximum length for a path is MAX_PATH, which is defined as 260 characters." I guess that the workaround is to use the "\\?\" prefix for "extended-length path". For example, "\\?\D:\very long path". => "The Windows API has many functions that also have Unicode versions to permit an extended-length path for a maximum total path length of 32,767 characters." ---------- nosy: +vstinner _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue36213> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
