function ok = set_modtime(file, time) utc = posixtime(datetime(time, 'TimeZone', 'UTC')); try s = py.os.stat(file); py.os.utime(file, py.tuple([s.st_atime, utc])); ok = true; catch e if e.identifier == "MATLAB:Python:PyException" && contains(e.message, "FileNotFoundError") ok = false; else ok = logical([]); end end end