Python ReportLab: An Example of bar code and two-dimensional code drawing, pythonreportlab

Python ReportLab: An Example of bar code and two-dimensional code drawing, pythonreportlab

Barcode and QR code

# Introduce the required basic package from reportlab.pdf gen import canvasfrom reportlab. graphics. barcode import code39, code128, code93from reportlab. graphics. barcode import eanbc, qr, uspsfrom reportlab. graphics. shapes import Drawing from reportlab. lib. units import mmfrom reportlab. graphics import renderPDF # export def createBarCodes (c): barcode_value = "1234567890" barcode39 = code39.Extended39 (barcode_value) barcode39Std = code39.Standard39 (barcode_value, barHeight = 20, stop = 1) # code93 also has an Extended and MultiWidth version barcode93 = partition (barcode_value) barcode128 = partition (barcode_value) # the multiwidth barcode appears to be broken # barcode128Multi = partition (barcode_value) Partition = usps. POSTNET ("50158-9999") codes = [barcode39, barcode39Std, barcode93, barcode128, barcode_usps] x = 1 * mm y = 285 * mm for code in codes: code. drawOn (c, x, y) y = y-15 * mm # draw the eanbc8 code barcode_eanbc8 = eanbc. ean8BarcodeWidget (barcode_value) d = Drawing (50, 10) d. add (barcode_eanbc8) renderPDF. draw (d, c, 15,555) # draw the eanbc13 code barcode_eanbc13 = eanbc. ean13BarcodeWidget (barcode_value) d = Drawing (50, 10) d. add (barcode_eanbc13) renderPDF. draw (d, c, 15,465) # draw a QR code qr_code = qr. qrCodeWidget ('HTTP: // blog.csdn.net/webzhuce') bounds = qr_code.getBounds () width = bounds [2]-bounds [0] height = bounds [3]-bounds [1] d = Drawing (45, 45, transform = [45. /width, 0, 0, 45. /height, 0, 0]) d. add (qr_code) renderPDF. draw (d, c, 15,405) # define the name of the pdf to be generated c = canvas. canvas ("barcodes.pdf") # Call the function to generate a barcode and a QR code, and pass the canvas object as a parameter to createBarCodes (c) # showPage function: Save canvasc on the current page. showPage () # save function: save the file and close canvasc. save ()

Running result:

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