使用reportlab生成条码

最新推荐文章于 2021-06-24 19:12:01 发布

转载最新推荐文章于 2021-06-24 19:12:01 发布 · 609 阅读

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原文链接：https://my.oschina.net/wujux/blog/1617976

本文介绍使用ReportLab库生成条形码的方法，并提供了一个具体的Python代码示例，展示了如何创建Code128条形码并将其导出为PNG格式的图片。

为什么80%的码农都做不了架构师？>>>

# -*-coding:utf-8 -*-
from reportlab.pdfbase import pdfmetrics
#添加中文支持
from reportlab.pdfbase.ttfonts import TTFont
pdfmetrics.registerFont(TTFont('msyh', 'fonts/msyh.ttc'))
from reportlab.graphics import barcode
from reportlab.lib.units import cm
from reportlab.pdfgen import canvas
from reportlab.graphics.barcode import code39, code128, code93
from reportlab.graphics.barcode import eanbc, qr, usps
from reportlab.graphics.shapes import Drawing 
from reportlab.lib.units import mm
from reportlab.graphics import renderPDF
from reportlab.lib import units
from reportlab.graphics import renderPM
from reportlab.graphics.barcode import createBarcodeDrawing

def get_barcode(value, width, barWidth = 0.05 * units.inch, fontSize = 30, humanReadable = True):

    barcode = createBarcodeDrawing('Code128', value = value, barWidth = barWidth, fontSize = fontSize, humanReadable = humanReadable)

    drawing_width = width
    barcode_scale = drawing_width / barcode.width
    drawing_height = barcode.height * barcode_scale

    drawing = Drawing(drawing_width, drawing_height)
    drawing.scale(barcode_scale, barcode_scale)
    drawing.add(barcode, name='barcode')

    return drawing

def get_image():

    barcode = get_barcode(value = '01234567890', width = 300)
    renderPM.drawToString(barcode, fmt = 'PNG')
    f = 'temp/test.png'
    renderPM.drawToFile(barcode,fn=f,fmt='png')
    
get_image()

转载于:https://my.oschina.net/wujux/blog/1617976