add os.devnull

Author: glaukiol1

os/os.module.go

@@ -58,6 +58,14 @@ func getdefpath() py.String {
 	return py.String(":/bin:/usr/bin")
 }
 
+// getdevnull returns the file path of the null device. This is '/dev/null' for posix and 'nul' for windows.
+func getdevnull() py.String {
+	if runtime.GOOS == "windows" {
+		return py.String("nul")
+	}
+	return py.String("/dev/null")
+}
+
 func init() {
 	methods := []*py.Method{
 		py.MustNewMethod("getcwd", getCwd, 0, "Get the current working directory"),