Skip to content

Instantly share code, notes, and snippets.

Embed
What would you like to do?
Shows a way to generate a PDF (with Python and ReportLab) of a sheet of labels containing EAN-13 Barcodes and a short, descriptive text.
#!/usr/bin/env python3
from reportlab.lib.pagesizes import A4
from reportlab.graphics.shapes import Drawing, String
from reportlab.graphics.barcode.eanbc import Ean13BarcodeWidget
from reportlab.graphics import renderPDF
from reportlab.pdfgen.canvas import Canvas
"""
Adjust pagesize, number of labels, barcode size and
positions of barcode and description to your needs.
"""
PAGESIZE = A4
NUM_LABELS_X = 3
NUM_LABELS_Y = 8
BAR_WIDTH = 1.5
BAR_HEIGHT = 51.0
TEXT_Y = 80
BARCODE_Y = 17
LABEL_WIDTH = PAGESIZE[0] / NUM_LABELS_X
LABEL_HEIGHT = PAGESIZE[1] / NUM_LABELS_Y
SHEET_TOP = PAGESIZE[1]
def label(ean13: str, description: str) -> Drawing:
"""
Generate a drawing with EAN-13 barcode and descriptive text.
:param ean13: The EAN-13 Code.
:type ean13: str
:param description: Short product description.
:type description: str
:return: Drawing with barcode and description
:rtype: Drawing
"""
text = String(0, TEXT_Y, description, fontName="Helvetica",
fontSize=10, textAnchor="middle")
text.x = LABEL_WIDTH / 2 # center text (anchor is in the middle)
barcode = Ean13BarcodeWidget(ean13)
barcode.barWidth = BAR_WIDTH
barcode.barHeight = BAR_HEIGHT
x0, y0, bw, bh = barcode.getBounds()
barcode.x = (LABEL_WIDTH - bw) / 2 # center barcode
barcode.y = BARCODE_Y # spacing from label bottom (pt)
label_drawing = Drawing(LABEL_WIDTH, LABEL_HEIGHT)
label_drawing.add(text)
label_drawing.add(barcode)
return label_drawing
def fill_sheet(canvas: Canvas, label_drawing: Drawing):
"""
Simply fill the given ReportLab canvas with label drawings.
:param canvas: The ReportLab canvas
:type canvas: Canvas
:param label_drawing: Contains Drawing of configured size
:type label_drawing: Drawing
"""
for u in range(0, NUM_LABELS_Y):
for i in range(0, NUM_LABELS_X):
x = i * LABEL_WIDTH
y = SHEET_TOP - LABEL_HEIGHT - u * LABEL_HEIGHT
renderPDF.draw(label_drawing, canvas, x, y)
if __name__ == '__main__':
canvas = Canvas("ean-sticker.pdf", pagesize=PAGESIZE)
sticker = label('5432072586067', 'ACME Rainbow Unicorn Powder')
fill_sheet(canvas, sticker)
canvas.save()
@Antimad
Copy link

Antimad commented Jan 1, 2020

Thank you!
Used this to generate labels with only text to display

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment