setop/python-escpos
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add os.devnull for platform independence

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fixes #288
This commit is contained in:
Patrick Kanzler 2018-05-14 23:34:31 +02:00
parent f649814091
commit d59d44447c
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1 changed files with 8 additions and 5 deletions
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src/escpos/escpos.py
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@ -24,6 +24,8 @@ from re import match as re_match
import barcode import barcode
from barcode.writer import ImageWriter from barcode.writer import ImageWriter
import os
from .constants import ESC, GS, NUL, QR_ECLEVEL_L, QR_ECLEVEL_M, QR_ECLEVEL_H, QR_ECLEVEL_Q from .constants import ESC, GS, NUL, QR_ECLEVEL_L, QR_ECLEVEL_M, QR_ECLEVEL_H, QR_ECLEVEL_Q
from .constants import QR_MODEL_1, QR_MODEL_2, QR_MICRO, BARCODE_TYPES, BARCODE_HEIGHT, BARCODE_WIDTH from .constants import QR_MODEL_1, QR_MODEL_2, QR_MICRO, BARCODE_TYPES, BARCODE_HEIGHT, BARCODE_WIDTH
from .constants import BARCODE_FONT_A, BARCODE_FONT_B, BARCODE_FORMATS from .constants import BARCODE_FONT_A, BARCODE_FONT_B, BARCODE_FORMATS
@ -487,11 +489,12 @@ class Escpos(object):
barcode_class = barcode.get_barcode_class(barcode_type) barcode_class = barcode.get_barcode_class(barcode_type)
my_code = barcode_class(data, writer=image_writer) my_code = barcode_class(data, writer=image_writer)
my_code.write("/dev/null", { with open(os.devnull, "w") as nullfile:
'module_height': module_height, my_code.write(nullfile, {
'module_width': module_width, 'module_height': module_height,
'text_distance': text_distance 'module_width': module_width,
}) 'text_distance': text_distance
})
# Retrieve the Pillow image and print it # Retrieve the Pillow image and print it
image = my_code.writer._image image = my_code.writer._image