How To Include Barcode Value With Actual Barcode Python `code128` Module

I just built a quick Python Azure Function that generates a barcode. The response is ONLY the rendered barcode in .png format. I also need the barcode VALUE to be displayed below i

Solution 1:

You get code as Pillow image so you can use Pillow to add margin for text and to draw this text.

You can get original size

w, h = barcode_image.size

calculate new size

new_w = w  # the same 

margin = 20
new_h = h + (2*margin) 

create empty image with white background

new_image = Image.new('RGB', (new_w, new_h), (255, 255, 255))

put original barcode in the middle of height

new_image.paste(barcode_image, (0, margin))

Next you can use ImageDraw to create object which can draw objects or put text on image

draw = ImageDraw.Draw(new_image)

and you can put some text using text(). You may need to use ImageFont to load font and set size. I use default font and size.

#fnt = ImageFont.truetype("arial.ttf", 40)
draw.text( (10, new_h - 10), barcode_text, fill=(0, 0, 0))#, font=fnt) 

and you have image with text in new_image. And you can save it in file and check directly in web browser or you can convert to bytes and send to client.

In example I use standard module webbrowser only to check image.

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EDIT

As @RufusVS noted in comment I could use image_new.show() instead of webbrowser

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import code128
import io
from PIL import Image, ImageDraw, ImageFont

barcode_param = '1234'
barcode_text = 'theseahawksarewinning'

# original image
barcode_image = code128.image(barcode_param, height=100)

# empty image for code and text - it needs margins for text
w, h = barcode_image.size
margin = 20
new_h = h +(2*margin) 

new_image = Image.new( 'RGB', (w, new_h), (255, 255, 255))

# put barcode on new image
new_image.paste(barcode_image, (0, margin))

# object to draw text
draw = ImageDraw.Draw(new_image)

# draw text
#fnt = ImageFont.truetype("arial.ttf", 40)
draw.text( (10, new_h - 10), barcode_text, fill=(0, 0, 0))#, font=fnt)  # 

# save in file 
new_image.save('barcode_image.png', 'PNG')

# show in default viewer
import webbrowser
webbrowser.open('barcode_image.png')

# --- later send it---

barcode_bytes = io.BytesIO()
new_image.save(barcode_bytes, "PNG")
barcode_bytes.seek(0)
data = barcode_bytes.getvalue()

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Doc: Image Image.new(), ImageDraw, ImageDraw.text() ImageFont