pyzbar | Read one-dimensional barcodes | Barcode Processing library

by NaturalHistoryMuseum Python Version: 0.1.9 License: MIT

X-Ray Key Features Code Snippets Community Discussions(10)Vulnerabilities Install Support

kandi X-RAY | pyzbar Summary

pyzbar is a Python library typically used in Utilities, Barcode Processing applications. pyzbar has no bugs, it has no vulnerabilities, it has build file available, it has a Permissive License and it has low support. You can install using 'pip install pyzbar' or download it from GitHub, PyPI.

Read one-dimensional barcodes and QR codes from Python 2 and 3.

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Quality

Security

License

Reuse

Support

pyzbar has a low active ecosystem.

It has 599 star(s) with 165 fork(s). There are 26 watchers for this library.

It had no major release in the last 12 months.

There are 65 open issues and 43 have been closed. On average issues are closed in 171 days. There are 8 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of pyzbar is 0.1.9

Quality

pyzbar has 0 bugs and 0 code smells.

Security

pyzbar has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

pyzbar code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

pyzbar is licensed under the MIT License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

pyzbar releases are not available. You will need to build from source code and install.

Deployable package is available in PyPI.

Build file is available. You can build the component from source.

pyzbar saves you 332 person hours of effort in developing the same functionality from scratch.

It has 892 lines of code, 57 functions and 15 files.

It has medium code complexity. Code complexity directly impacts maintainability of the code.

Top functions reviewed by kandi - BETA

kandi has reviewed pyzbar and discovered the below as its top functions. This is intended to give you an instant insight into pyzbar implemented functionality, and help decide if they suit your requirements.

Decode an image
Return the pixel data of the image
Decode a list of symbol objects
Compute the convex hull of a set of points
Context manager to create a zbar image
Context manager to create an image scanner
Computes the bounding box of the given locations
Generator that yields the symbol for the given image
Decorator to create a new Zbar class
Load shared library
Determine the filenames of windows
Load the library
Get README rst rst rst
Setuptools setup

Get all kandi verified functions for this library.

pyzbar Key Features

No Key Features are available at this moment for pyzbar.

pyzbar Examples and Code Snippets

No Code Snippets are available at this moment for pyzbar.

Community Discussions

Trending Discussions on pyzbar

why is this signature different from the original after creating a qr code and scanning it with pyzbar?

Pyzbar on Android doesn't read QRcodes, but reads barcodes

Quit Python QR Scanner when no code is detected but keep running while processing the code

Buildozer Class not found b'org/renpy/android/PythonActivity'

Why does my video feed hang after a while (Not Responding) on Python open cv?

Pyzbar recognizes EAN-13 barcode as PDF417?

Webcam barcode reader: Exporting multiple barcode data to notepad

QR-code decoding using python got too many values to unpack error

Pyinstaller is unable to run a Kivy Application due to KeyError

accessing list elements in python

QUESTION

why is this signature different from the original after creating a qr code and scanning it with pyzbar?

Asked 2022-Mar-29 at 06:25

I'm generating a digital signature(using https://pypi.org/project/rsa/) and saving it on a qrcode(using https://pypi.org/project/qrcode/) so I can distribute them on paper and scan them later. However, the byte sequence scanned is different from the one i originally created, why the verification fails.

The following code

...

ANSWER

Answered 2022-Mar-29 at 06:25

I would highly recommend that you encode whatever you want to sign in base64 before signing. This is a standard approach for digital signatures, ensuring consistency of the signed data.
The output of the pyzbar.decode function is an array of "Decoded" objects, of which you're not retrieving the correct element.

Below the corrected code:

Source https://stackoverflow.com/questions/71635690

QUESTION

Pyzbar on Android doesn't read QRcodes, but reads barcodes

Asked 2022-Feb-02 at 11:27

I have been developing a kivy application with pyzbar to run on an Android that needs to read barcodes and QRcodes. The application read both barcodes and QRcodes running on my pc, but fails to read QRcodes while using the .apk built with buildozer, while still managing to read barcodes efficiently.

I thought (as it works on pc) that the problem was in dependencies in the .spec file while building to the apk.

Buildozer.spec requirements:

...

ANSWER

Answered 2022-Feb-02 at 11:27

After a couple of days I managed to find the problem. For some reason that I didn't know, my android was mirroring the image (despite the one in the app being perfectly fine). I was getting the image in kivy source code and sending it to a function.

Source https://stackoverflow.com/questions/70895762

QUESTION

Quit Python QR Scanner when no code is detected but keep running while processing the code

Asked 2021-Nov-23 at 08:11

I'm creating a python script that scans QR codes, and then processes the info in the code. The python-script will launch every few seconds via a timer in systemd on RBPI, but while scanning for a code - if no code has been detected in 5 seconds, the script should terminate. However, if a code is detected, the processing should keep running, and the script should only exit when the processing is done.

This is my code:

...

ANSWER

Answered 2021-Nov-23 at 08:11

After searching on this for the day, and with Yves' comment on the question, I came to the conclusion that I was working the wrong way around. So now I added a global Timer, which get canceled if the processing of the QR code gets started.

Now my code looks like this, and it seems to work. Would love to hear it if there is a better way, or if this use of globals is bad practise.

Source https://stackoverflow.com/questions/70064519

QUESTION

Buildozer Class not found b'org/renpy/android/PythonActivity'

Asked 2021-Jul-28 at 22:52

After compiling a Kivy Application with Buildozer, it crashes on Android when run

Example:

...

ANSWER

Answered 2021-Jul-28 at 22:52

In order for everything to work correctly and the example below to run, you need to perform the following steps:

On your PC:

Source https://stackoverflow.com/questions/68513776

QUESTION

Why does my video feed hang after a while (Not Responding) on Python open cv?

Asked 2021-Jun-02 at 09:35

I'm currently trying to write a programme that can open a live video feed (webcam) and identify QR or Barcodes live as they appear under the camera but the video feed always hangs after a while. I am running this on python and I have imported the following libraries:

qrcode
csv
cv2
numpy
from pyzbar.pyzbar import decode

Here is the function that I call in the console:

...

ANSWER

Answered 2021-Jun-02 at 09:35

success, img = cap.read()

Source https://stackoverflow.com/questions/67782204

QUESTION

Pyzbar recognizes EAN-13 barcode as PDF417?

Asked 2021-May-07 at 13:57

I'm trying to build a realtime barcode reader using pyzbar. I have only EAN-13 barcodes and some of them are read properly but some are recognized as PDF417 and I get this message: WARNING: .\zbar\decoder\pdf417.c:89: : Assertion "g[0] >= 0 && g[1] >= 0 && g[2] >= 0" failed How to increase efficiency? Maybe there is another python library which I can use?

This is my code:

...

ANSWER

Answered 2021-May-07 at 13:57

If you only have EAN-13, you could specify that so pyzbar would only check for EAN-13. You can specify the desired codes in a list to the parameter symbols when calling decode(...).

Source https://stackoverflow.com/questions/67436051

QUESTION

Webcam barcode reader: Exporting multiple barcode data to notepad

Asked 2021-Apr-14 at 08:37

I have modified some code I found online that reads barcode from webcam using opencv/pyzbar.

It is able to read multiple barcode but when I tired to write it to a notepad, only 1 data appears.

I have tried saving the data read to an array/list and export but it doesn't work.

How can I get it to write all the distinct barcode to a notepad.

...

ANSWER

Answered 2021-Apr-14 at 08:37

I didn't read all the code but it appear that you use 'w' mode to open the file, each time you do that, the file is erased before writing.

You probably need to use mode='a' for append.

for your second question, just move a bit your loop so it execute in the else statement. in your code it write in the file ignoring the if statement.

Source https://stackoverflow.com/questions/67087244

QUESTION

QR-code decoding using python got too many values to unpack error

Asked 2021-Mar-31 at 18:20

I was generating a QR code image using python.

My code:

...

ANSWER

Answered 2021-Mar-31 at 18:20

I would suggest using PIL to open the image, as that is, what pyzbar is designed for:

Source https://stackoverflow.com/questions/66893009

QUESTION

Pyinstaller is unable to run a Kivy Application due to KeyError

Asked 2021-Mar-31 at 15:11

I'm packaging a Kivy Application using pyinstaller. The original application works fine, but when running from the dist folder, it fails due to a key error. Specifically, it starts the Kivy application, but then immediately closes due to the key error.

Error Message:

...

ANSWER

Answered 2021-Mar-31 at 13:26

Can u share your .spec file with me? I had the same problem a couple of weeks ago. I think that you didn't specify your data source.

My .spec file is located in: ../denul2/ My code files (.py/.kv) are located in: ../denul2/project/

Look at this: https://imgur.com/a/pWCKPQ1

edit: Try to also add this: https://imgur.com/a/rGFOMw5

Source https://stackoverflow.com/questions/66837482

QUESTION

accessing list elements in python

Asked 2021-Jan-01 at 14:28

from pyzbar.pyzbar import ZBarSymbol
# Look for just qrcode
decode(Image.open('pyzbar/tests/qrcode.png'), symbols=[ZBarSymbol.QRCODE])
[
    Decoded(
        data=b'Thalassiodracon', type='QRCODE',
        rect=Rect(left=27, top=27, width=145, height=145),
        polygon=[
            Point(x=27, y=27), Point(x=27, y=172), Point(x=172, y=172),
            Point(x=172, y=27)
        ]
    )
]

...

ANSWER

Answered 2021-Jan-01 at 13:57

decode returns a list of Decoded objects.

If you are only interested in the first object, then info[0].data will do the trick.

Source https://stackoverflow.com/questions/65529421

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install pyzbar

You can install using 'pip install pyzbar' or download it from GitHub, PyPI.
You can use pyzbar like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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