Python implements an example of a method that generates a QR code from text

This article gives an example of an Python implementation that generates 2-dimensional code from text. To share for your reference, specific as follows:

#coding:utf-8
'''
Python generate 2 D code  v1.0
 Basically generate the text 2 D code pictures 
 test 1 : Creates black text on a white background 2 D code pictures 
 test 2 : Generates a text band logo the 2 D code pictures 
'''
__author__ = 'Xue'
import qrcode
from PIL import Image
import os
# generate 2 D code pictures 
def make_qr(str,save):
  qr=qrcode.QRCode(
    version=4, # generate 2 The size of a dimension  1-40 1:21*21 ( 21+(n-1)*4 ) 
    error_correction=qrcode.constants.ERROR_CORRECT_M, #L:7% M:15% Q:25% H:30%
    box_size=10, # The pixel size of each cell 
    border=2, # The grid width size of the border 
  )
  qr.add_data(str)
  qr.make(fit=True)
  img=qr.make_image()
  img.save(save)
# Generated with logo the 2 D code pictures 
def make_logo_qr(str,logo,save):
  # Parameter configuration 
  qr=qrcode.QRCode(
    version=4,
    error_correction=qrcode.constants.ERROR_CORRECT_Q,
    box_size=8,
    border=2
  )
  # Add conversion content 
  qr.add_data(str)
  #
  qr.make(fit=True)
  # generate 2 D code 
  img=qr.make_image()
  #
  img=img.convert("RGBA")
  # add logo
  if logo and os.path.exists(logo):
    icon=Image.open(logo)
    # To obtain 2 The size of a dimensional image 
    img_w,img_h=img.size
    factor=4
    size_w=int(img_w/factor)
    size_h=int(img_h/factor)
    #logo The size of the picture must not exceed 2 Dimension code picture 1/4
    icon_w,icon_h=icon.size
    if icon_w>size_w:
      icon_w=size_w
    if icon_h>size_h:
      icon_h=size_h
    icon=icon.resize((icon_w,icon_h),Image.ANTIALIAS)
    # To calculate logo in 2 The position in a dimension chart 
    w=int((img_w-icon_w)/2)
    h=int((img_h-icon_h)/2)
    icon=icon.convert("RGBA")
    img.paste(icon,(w,h),icon)
  # Save the processed image 
  img.save(save)
if __name__=='__main__':
  save_path='theqrcode.png' # The generated save file 
  logo='logo.jpg' #logo The picture 
  str=raw_input(' Please enter to generate 2 Text content of dimension code: ')
  #make_qr(str)
  make_logo_qr(str,logo,save_path)

PS: Here is another recommended 2-d code online generation tool for your reference:

Online 2-d code Generation tool (Enhanced)
http://tools.ofstack.com/transcoding/jb51qrcode

For more information about Python, please refer to Python Coding Skills Summary, Python Data Structure and Algorithm Tutorial, Python Function Using Skills Summary, Python String Operation Skills Summary, Python Introduction and Advanced Classic Tutorial and Python File and Directory Operation Skills Summary.

I hope this article is helpful for Python programming.