The Bug of Http url mixed Chinese character

[RyanLiuF]

import qrcode
qr = qrcode.QRCode(   
  version=1,   
  error_correction=qrcode.constants.ERROR_CORRECT_L,   
  box_size=20,   
  border=4, 
) 
qr.add_data('http://127.0.0.1/file/economic/现代方法.pdf') 
qr.make(fit=True) 
img = qr.make_image()
img.save('test.png')

If the url is 'http://127.0.0.1/file/economic/现代方法.pdf', then the scanned image data is 'http://127.0.0.1/file/economic/.pdf'. But if the url is 'http:/127.0.0.1/file/economic/现代方法.pdf', the result is OK. Please fixed it.

[heuer]

Is the missing slash after the http scheme in the 2nd URL intentional?

Using your code above results into the following QR Code

Decoding seems to be fine

[RyanLiuF]

But I use the wechat app to scan the image , the result is "http://127.0.0.1/file/economic/.pdf". Seems that the app makes mistake ??

[nayuki]

I believe you are not allowed to put Unicode characters into URLs. You should UTF-8 encode them and then percent-encode them, like this: http://127.0.0.1/file/economic/%E7%8E%B0%E4%BB%A3%E6%96%B9%E6%B3%95.pdf

[johann-lau]

I am experiencing a similar issue with a Discord Bot URL: https://discord.com/oauth2/authorize?client_id=123456&permissions=0&scope=bot%20applications.commands I tried scanning with a full-fledged GUI scanner as well as another Python library, but none of them gave me a result. They couldn't even detect the QR Code in the image.

[nayuki]

@johann-lau Please post a screenshot or picture of the QR Code that you are having problems with.

Also, it's not clear that your problem is related to this existing thread, which is about Chinese/Unicode characters in a URL.