Qr code read

[codeing]

how can we read qr codes in 1st page from a pdf file
and verify the same qr code is present in all the other pages of the file

 

[Phro0244]

You can use the PyPDF2 and pyzbar libraries to read QR codes from a PDF file and verify if the same QR code is present in all the other pages of the file. Here's an example Python code that shows how to do this:

import PyPDF2
from pyzbar.pyzbar import decode
from PIL import Image

# Open the PDF file and get the first page
pdf_file = open('file.pdf', 'rb')
pdf_reader = PyPDF2.PdfFileReader(pdf_file)
page = pdf_reader.getPage(0)

# Convert the first page to an image
page_image = page.getPixmap().getImage()

# Decode the QR code from the first page image
qr_code = decode(page_image)[0].data.decode('utf-8')

# Loop through all the other pages and check if the same QR code is present
for i in range(1, pdf_reader.getNumPages()):
    page = pdf_reader.getPage(i)
    page_image = page.getPixmap().getImage()
    if qr_code not in [code.data.decode('utf-8') for code in decode(page_image)]:
        print(f"The QR code {qr_code} is not present on page {i+1}")
        break
else:
    print("The QR code is present in all pages")
    
pdf_file.close()

This code reads the first page of the PDF file and converts it to an image. Then it uses the pyzbar library to decode the QR code from the image. Next, it loops through all the other pages of the PDF file and checks if the same QR code is present on each page. If the QR code is not present on any page, it breaks the loop and prints a message saying that the QR code is not present on that page. If the loop completes successfully without finding any page without the QR code, it prints a message saying that the QR code is present in all pages.

 

[codeing]

Sir,some errors occur
Traceback (most recent call last):
File "c:\Users\php\PycharmProjects\newforum\new.py", line 15, in <module>
pdf_reader = PyPDF2.PdfFileReader(pdf_file)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\php\PycharmProjects\pythonwork\benv\Lib\site-packages\PyPDF2\reader.py", line 1974, in __init_
deprecation_with_replacement("PdfFileReader", "PdfReader", "3.0.0")
File "C:\Users\php\PycharmProjects\pythonwork\benv\Lib\site-packages\PyPDF2\_utils.py", line 369, in deprecation_with_replacement
deprecation(DEPR_MSG_HAPPENED.format(old_name, removed_in, new_name))
File "C:\Users\php\PycharmProjects\pythonwork\benv\Lib\site-packages\PyPDF2\_utils.py", line 351, in deprecation
raise DeprecationError(msg)
PyPDF2.errors.DeprecationError: PdfFileReader is deprecated and was removed in PyPDF2 3.0.0. Use PdfReader instead.