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This article will explain in detail how to generate a QR code for Pythonqrcode. The editor thinks it is very practical, so I share it for you as a reference. I hope you can get something after reading this article.

The picture of QR code is generated by pillow.

Installation of qrcode

Enter on the command line

Pip install qrcode [pil]

Usage:

1. Enter on the command line

Qr "Some text" > test.png

2. Enter in python

Import qrcodeimg = qrcode.make ('Some data here')

Advanced usage:

Use the QRCode class

Import qrcodeqr = qrcode.QRCode (version=1, error_correction=qrcode.constants.ERROR_CORRECT_L, box_size=10, border=4,) qr.add_data ('Some data') qr.make (fit=True) img = qr.make_image (fill_color= "black", back_color= "white")

Parameter version: the size of the QR code, which has a total of 40 sizes. The size of the QR code is controlled by integers from 1 to 40 (the minimum is 1Magne21x21 matrix).

Parameter error_correction: error correction level. For example, if the QR code is disabled, it can still be scanned. The default is M level.

About 7% of the code at the ERROR_CORRECT_LL level can be modified. About 15% at the ERROR_CORRECT_M (default) M level can be modified. About 25% at the ERROR_CORRECT_QQ level can be modified. About 30% at the ERROR_CORRECT_HH level can be modified.

Parameter box_size: controls the number of pixels in each cell of the QR code

Parameter border: control border, minimum 4

Parameters fill_color and back_color: change the background color of the QR code and the color of each cell

This is the end of the article on "how Pythonqrcode generates a QR code". I hope the above content can be of some help to you, so that you can learn more knowledge. if you think the article is good, please share it for more people to see.

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