使用pybarcode ImageWriter和docx模块将条形码图像附加到docx文件

Question

How can i reduce the image size which is generated by pybarcode ImageWriter, and also how can append multiple images to docx file with proper alignment?

I read about dpi option for ImageWriter but not getting how to use it.

import barcode
from barcode.writer import ImageWriter
from docx import *

if __name__ == '__main__':        
    # Default set of relationshipships - these are the minimum components of a document
    ean = barcode.get_barcode('ean', '123456789102', writer=ImageWriter())
    ean.default_writer_options['module_height'] = 3.0
    ean.default_writer_options['module_width'] = 0.1
    filename = ean.save('bar_image')    

    relationships = relationshiplist()

    # Make a new document tree - this is the main part of a Word document
    document = newdocument()

    # This xpath location is where most interesting content lives 
    docbody = document.xpath('/w:document/w:body', namespaces=nsprefixes)[0]
    # Add an image
    relationships,picpara = picture(relationships, filename,'This is a test description')
    docbody.append(picpara)

    # Create our properties, contenttypes, and other support files
    coreprops = coreproperties(title='Python docx demo',subject='A practical example of making docx from Python',creator='Mike MacCana',keywords=['python','Office Open XML','Word'])
    appprops = appproperties()
    contenttypes = contenttypes()
    websettings = websettings()
    wordrelationships = wordrelationships(relationships)

    # Save our document
        savedocx(document,coreprops,appprops,contenttypes,websettings,wordrelationships,'sample_barcode.docx')

Answer 1

Generally, the barcode.writer doesn't give a parameter on the generated output image size, and you may ask PIL help. And the proper alignment is quite not accurate to code, but you may try using tables to make them in right place.

In PIL, you can resize the png image to (480,320) by

from PIL import Image
im = Image.open("barcode.png")
im.resize((480,320)).save("barcode_resized.png")

And for the docx file, some table example is here , you may need know what proper aliment is and then type the code.