Warning shown

[kumy]

Just installed this plugin on Inkscape 1.0 (4035a4fb49, 2020-05-01) and got those warnings.

$ inkscape --version
Inkscape 1.0 (4035a4fb49, 2020-05-01)
    Pango version: 1.44.7

$ python3 --version
Python 3.8.5

$ cat /etc/issue
Ubuntu Groovy Gorilla (development branch) \n \l

qrcode.py:26: ImportWarning: can't resolve package from __spec__ or __package__, falling back on __name__ and __path__
  from ._segno import encoder, utils
qrcode.py:44: DeprecationWarning: Effect.OptionParser or `optparse` has been deprecated and replaced with `argparser`.You must change `self.OptionParser.add_option` to `self.arg_parser.add_argument`; the arguments are similar.
  self.OptionParser.add_option('--data', action='store',
qrcode.py:46: DeprecationWarning: Effect.OptionParser or `optparse` has been deprecated and replaced with `argparser`.You must change `self.OptionParser.add_option` to `self.arg_parser.add_argument`; the arguments are similar.
  self.OptionParser.add_option('--version', action='store',
qrcode.py:48: DeprecationWarning: Effect.OptionParser or `optparse` has been deprecated and replaced with `argparser`.You must change `self.OptionParser.add_option` to `self.arg_parser.add_argument`; the arguments are similar.
  self.OptionParser.add_option('--scale', action='store',
qrcode.py:50: DeprecationWarning: Effect.OptionParser or `optparse` has been deprecated and replaced with `argparser`.You must change `self.OptionParser.add_option` to `self.arg_parser.add_argument`; the arguments are similar.
  self.OptionParser.add_option('--error', action='store',
qrcode.py:52: DeprecationWarning: Effect.OptionParser or `optparse` has been deprecated and replaced with `argparser`.You must change `self.OptionParser.add_option` to `self.arg_parser.add_argument`; the arguments are similar.
  self.OptionParser.add_option('--symbol_count', action='store',
qrcode.py:55: DeprecationWarning: Effect.OptionParser or `optparse` has been deprecated and replaced with `argparser`.You must change `self.OptionParser.add_option` to `self.arg_parser.add_argument`; the arguments are similar.
  self.OptionParser.add_option('--background', action='store',
qrcode.py:57: DeprecationWarning: Effect.OptionParser or `optparse` has been deprecated and replaced with `argparser`.You must change `self.OptionParser.add_option` to `self.arg_parser.add_argument`; the arguments are similar.
  self.OptionParser.add_option('--allow_micro', action='store',
qrcode.py:59: DeprecationWarning: Effect.OptionParser or `optparse` has been deprecated and replaced with `argparser`.You must change `self.OptionParser.add_option` to `self.arg_parser.add_argument`; the arguments are similar.
  self.OptionParser.add_option('--boost_error', action='store',
qrcode.py:128: DeprecationWarning: Effect.affect is now `Effect.run()`. The `output` argument has changed.
  e.affect()
qrcode.py:83: DeprecationWarning: Effect.view_center is now a method in the svg. Use `self.svg.namedview.center` instead.
  centre = tuple(computePointInNode(list(self.view_center), self.current_layer))
qrcode.py:83: DeprecationWarning: Effect.current_layer is now a method in the svg. Use `self.svg.get_current_layer()` instead.
  centre = tuple(computePointInNode(list(self.view_center), self.current_layer))
qrcode.py:83: DeprecationWarning: simpletransform.computePointInNode -> (-Transform(node.transform * mat)).apply_to_point(pt)
  centre = tuple(computePointInNode(list(self.view_center), self.current_layer))
qrcode.py:87: DeprecationWarning: inkex.etree was removed, use "from lxml import etree"
  grp = inkex.etree.SubElement(self.current_layer, inkex.addNS('g', 'svg'),
qrcode.py:87: DeprecationWarning: Effect.current_layer is now a method in the svg. Use `self.svg.get_current_layer()` instead.
  grp = inkex.etree.SubElement(self.current_layer, inkex.addNS('g', 'svg'),
qrcode.py:100: DeprecationWarning: inkex.etree was removed, use "from lxml import etree"
  inkex.etree.SubElement(g, inkex.addNS('path', 'svg'), d=path_data,

[heuer]

Thanks for the hint.

The code is somewhat out of date and not actively maintained. I wonder if the project still makes sense, as far as I know Inkscape now has better support for QR codes than a few years ago.