一、python 生成一维码

xiaoxiao2021-02-28  95

生活中到处可见一维码,几乎所有的正规产品上都可以看到,这几天好奇使用python可不可以实现生成一维码,并打印的功能,还真让我找到方法了,下面记录一下过程。

所需软件: pyBarcode 0.7 https://pypi.python.org/pypi/pyBarcode/0.7 python2.7.12 Pillow-4.2.1 https://pypi.python.org/pypi/Pillow/4.2.1 pywin32 https://pypi.python.org/pypi/pywin32/

第一步 生成一维码:

from barcode.writer import ImageWriter from barcode.codex import Code39 from PIL import Image, ImageDraw, ImageFont, ImageWin from StringIO import StringIO def generagteBarCode(self): imagewriter = ImageWriter() #保存到图片中 # add_checksum : Boolean Add the checksum to code or not (default: True) ean = Code39("1234567890", writer=imagewriter, add_checksum=False) # 不需要写后缀,ImageWriter初始化方法中默认self.format = 'PNG' print '保存到image2.png' ean.save('image2') img = Image.open('image2.png') print '展示image2.png' img.show() # 写入stringio流中 i = StringIO() ean = Code39("0987654321", writer=imagewriter, add_checksum=False) ean.write(i) i = StringIO(i.getvalue()) img1 = Image.open(i) print '保存到stringIO中并以图片方式打开' img1.show()

效果如下:

参考文章: pyBarcode document http://pythonhosted.org/pyBarcode/writers/index.html StringIO https://docs.python.org/2/library/stringio.html pywin32 win32print http://timgolden.me.uk/python/win32_how_do_i/print.html pillow document http://pillow.readthedocs.io/en/4.2.x/reference/ImageDraw.html#example-draw-a-gray-cross-over-an-image pillow 图片处理示例 http://www.yeayee.com/article-6739499-1.html

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