Python generates QR codes using the QRCode module
QRCode official website
/pypi/qrcode/5.1
synopsis
python-qrcode is a third-party module for generating QR code images that relies on the PIL module and the qrcode library.
simple usage
import qrcode
img = ('hello, qrcode')
('')
Advanced Usage
import qrcode
qr = (
version=1,
error_correction=.ERROR_CORRECT_L,
box_size=10,
border=4,
)
qr.add_data('hello, qrcode')
(fit=True)
img = qr.make_image()
('')
Parameter Meaning:
version: the value is an integer from 1 to 40, which controls the size of the QR code (the minimum value is 1, which is a 12×12 matrix). If you want the program to determine it automatically, set the value to None and use the fit parameter.
error_correction: controls the error correction function of the QR code. Can take values of the following 4 constants.
ERROR_CORRECT_L: About 7% or less of errors can be corrected.
ERROR_CORRECT_M (default): about 15% or less of errors can be corrected.
ROR_CORRECT_H: About 30% or less of the errors can be corrected.
box_size: controls the number of pixels contained in each small cell in the QR code.
border: controls the number of squares contained in the border (the distance between the QR code and the image boundary) (default is 4, which is the minimum value specified by the relevant standard)
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