From 3dc710b157dc4e194c34637f02ee556a367d21b9 Mon Sep 17 00:00:00 2001 From: Patrick Kanzler Date: Tue, 15 May 2018 00:25:18 +0200 Subject: [PATCH] open devnull as binary --- src/escpos/escpos.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/escpos/escpos.py b/src/escpos/escpos.py index 22755ab..98a6e93 100644 --- a/src/escpos/escpos.py +++ b/src/escpos/escpos.py @@ -489,7 +489,7 @@ class Escpos(object): barcode_class = barcode.get_barcode_class(barcode_type) my_code = barcode_class(data, writer=image_writer) - with open(os.devnull, "w") as nullfile: + with open(os.devnull, "wb") as nullfile: my_code.write(nullfile, { 'module_height': module_height, 'module_width': module_width,