Do not add "qrcode_modules" attribute in svg image

[paulo-raca]

The generated SVG files had a big and unnecessary extra attribute: <svg qrcode_modules=....>

E.g., for this snippet:

import qrcode
from qrcode.image.svg import SvgPathImage
img = qrcode.make("Hi", image_factory=SvgPathImage)
print(img.to_string(encoding="unicode"))

It would previously result in:

<svg width="29mm" height="29mm" version="1.1" viewBox="0 0 29 29" qrcode_modules="[[True, True, True, True, True, True, True, False, False, False, True, True, False, False, True, True, True, True, True, True, True], [True, False, False, False, False, False, True, False, True, True, True, True, True, False, True, False, False, False, False, False, True], [True, False, True, True, True, False, True, False, True, True, False, False, True, False, True, False, True, True, True, False, True], [True, False, True, True, True, False, True, False, True, False, True, False, False, False, True, False, True, True, True, False, True], [True, False, True, True, True, False, True, False, False, True, True, True, True, False, True, False, True, True, True, False, True], [True, False, False, False, False, False, True, False, False, True, False, False, True, False, True, False, False, False, False, False, True], [True, True, True, True, True, True, True, False, True, False, True, False, True, False, True, True, True, True, True, True, True], [False, False, False, False, False, False, False, False, True, True, True, True, True, False, False, False, False, False, False, False, False], [True, False, False, False, False, False, True, False, True, True, True, False, True, True, True, False, False, True, True, True, False], [True, False, True, True, False, True, False, False, False, True, True, False, True, False, True, False, True, False, False, False, False], [False, True, True, False, False, True, True, True, False, False, True, True, False, True, False, False, True, True, True, True, False], [True, True, False, True, False, False, False, False, True, False, True, False, False, False, False, False, True, False, True, False, False], [True, False, True, False, False, True, True, True, True, False, False, False, False, False, True, False, False, True, True, True, False], [False, False, False, False, False, False, False, False, True, False, True, True, True, True, True, True, False, True, False, False, False], [True, True, True, True, True, True, True, False, False, False, True, False, True, False, True, True, False, False, False, True, False], [True, False, False, False, False, False, True, False, False, False, False, True, True, True, False, True, True, True, False, False, False], [True, False, True, True, True, False, True, False, False, True, False, False, True, False, False, True, False, False, True, False, False], [True, False, True, True, True, False, True, False, False, False, True, False, True, False, False, False, False, False, True, False, False], [True, False, True, True, True, False, True, False, False, True, True, False, False, False, True, False, False, False, True, True, True], [True, False, False, False, False, False, True, False, False, False, True, False, False, False, False, False, True, False, True, False, False], [True, True, True, True, True, True, True, False, True, True, True, True, False, True, False, False, True, True, True, True, False]]" xmlns="http://www.w3.org/2000/svg"><path d="M4,4H5V5H4zM5,4H6V5H5zM6,4H7V5H6zM7,4H8V5H7zM8,4H9V5H8zM9,4H10V5H9zM10,4H11V5H10zM14,4H15V5H14zM15,4H16V5H15zM18,4H19V5H18zM19,4H20V5H19zM20,4H21V5H20zM21,4H22V5H21zM22,4H23V5H22zM23,4H24V5H23zM24,4H25V5H24zM4,5H5V6H4zM10,5H11V6H10zM12,5H13V6H12zM13,5H14V6H13zM14,5H15V6H14zM15,5H16V6H15zM16,5H17V6H16zM18,5H19V6H18zM24,5H25V6H24zM4,6H5V7H4zM6,6H7V7H6zM7,6H8V7H7zM8,6H9V7H8zM10,6H11V7H10zM12,6H13V7H12zM13,6H14V7H13zM16,6H17V7H16zM18,6H19V7H18zM20,6H21V7H20zM21,6H22V7H21zM22,6H23V7H22zM24,6H25V7H24zM4,7H5V8H4zM6,7H7V8H6zM7,7H8V8H7zM8,7H9V8H8zM10,7H11V8H10zM12,7H13V8H12zM14,7H15V8H14zM18,7H19V8H18zM20,7H21V8H20zM21,7H22V8H21zM22,7H23V8H22zM24,7H25V8H24zM4,8H5V9H4zM6,8H7V9H6zM7,8H8V9H7zM8,8H9V9H8zM10,8H11V9H10zM13,8H14V9H13zM14,8H15V9H14zM15,8H16V9H15zM16,8H17V9H16zM18,8H19V9H18zM20,8H21V9H20zM21,8H22V9H21zM22,8H23V9H22zM24,8H25V9H24zM4,9H5V10H4zM10,9H11V10H10zM13,9H14V10H13zM16,9H17V10H16zM18,9H19V10H18zM24,9H25V10H24zM4,10H5V11H4zM5,10H6V11H5zM6,10H7V11H6zM7,10H8V11H7zM8,10H9V11H8zM9,10H10V11H9zM10,10H11V11H10zM12,10H13V11H12zM14,10H15V11H14zM16,10H17V11H16zM18,10H19V11H18zM19,10H20V11H19zM20,10H21V11H20zM21,10H22V11H21zM22,10H23V11H22zM23,10H24V11H23zM24,10H25V11H24zM12,11H13V12H12zM13,11H14V12H13zM14,11H15V12H14zM15,11H16V12H15zM16,11H17V12H16zM4,12H5V13H4zM10,12H11V13H10zM12,12H13V13H12zM13,12H14V13H13zM14,12H15V13H14zM16,12H17V13H16zM17,12H18V13H17zM18,12H19V13H18zM21,12H22V13H21zM22,12H23V13H22zM23,12H24V13H23zM4,13H5V14H4zM6,13H7V14H6zM7,13H8V14H7zM9,13H10V14H9zM13,13H14V14H13zM14,13H15V14H14zM16,13H17V14H16zM18,13H19V14H18zM20,13H21V14H20zM5,14H6V15H5zM6,14H7V15H6zM9,14H10V15H9zM10,14H11V15H10zM11,14H12V15H11zM14,14H15V15H14zM15,14H16V15H15zM17,14H18V15H17zM20,14H21V15H20zM21,14H22V15H21zM22,14H23V15H22zM23,14H24V15H23zM4,15H5V16H4zM5,15H6V16H5zM7,15H8V16H7zM12,15H13V16H12zM14,15H15V16H14zM20,15H21V16H20zM22,15H23V16H22zM4,16H5V17H4zM6,16H7V17H6zM9,16H10V17H9zM10,16H11V17H10zM11,16H12V17H11zM12,16H13V17H12zM18,16H19V17H18zM21,16H22V17H21zM22,16H23V17H22zM23,16H24V17H23zM12,17H13V18H12zM14,17H15V18H14zM15,17H16V18H15zM16,17H17V18H16zM17,17H18V18H17zM18,17H19V18H18zM19,17H20V18H19zM21,17H22V18H21zM4,18H5V19H4zM5,18H6V19H5zM6,18H7V19H6zM7,18H8V19H7zM8,18H9V19H8zM9,18H10V19H9zM10,18H11V19H10zM14,18H15V19H14zM16,18H17V19H16zM18,18H19V19H18zM19,18H20V19H19zM23,18H24V19H23zM4,19H5V20H4zM10,19H11V20H10zM15,19H16V20H15zM16,19H17V20H16zM17,19H18V20H17zM19,19H20V20H19zM20,19H21V20H20zM21,19H22V20H21zM4,20H5V21H4zM6,20H7V21H6zM7,20H8V21H7zM8,20H9V21H8zM10,20H11V21H10zM13,20H14V21H13zM16,20H17V21H16zM19,20H20V21H19zM22,20H23V21H22zM4,21H5V22H4zM6,21H7V22H6zM7,21H8V22H7zM8,21H9V22H8zM10,21H11V22H10zM14,21H15V22H14zM16,21H17V22H16zM22,21H23V22H22zM4,22H5V23H4zM6,22H7V23H6zM7,22H8V23H7zM8,22H9V23H8zM10,22H11V23H10zM13,22H14V23H13zM14,22H15V23H14zM18,22H19V23H18zM22,22H23V23H22zM23,22H24V23H23zM24,22H25V23H24zM4,23H5V24H4zM10,23H11V24H10zM14,23H15V24H14zM20,23H21V24H20zM22,23H23V24H22zM4,24H5V25H4zM5,24H6V25H5zM6,24H7V25H6zM7,24H8V25H7zM8,24H9V25H8zM9,24H10V25H9zM10,24H11V25H10zM12,24H13V25H12zM13,24H14V25H13zM14,24H15V25H14zM15,24H16V25H15zM17,24H18V25H17zM20,24H21V25H20zM21,24H22V25H21zM22,24H23V25H22zM23,24H24V25H23z" id="qr-path" fill="#000000" fill-opacity="1" fill-rule="nonzero" stroke="none" /></svg>

After the changes, it results in:

<svg width="29mm" height="29mm" version="1.1" viewBox="0 0 29 29" xmlns="http://www.w3.org/2000/svg"><path d="M4,4H5V5H4zM5,4H6V5H5zM6,4H7V5H6zM7,4H8V5H7zM8,4H9V5H8zM9,4H10V5H9zM10,4H11V5H10zM14,4H15V5H14zM15,4H16V5H15zM18,4H19V5H18zM19,4H20V5H19zM20,4H21V5H20zM21,4H22V5H21zM22,4H23V5H22zM23,4H24V5H23zM24,4H25V5H24zM4,5H5V6H4zM10,5H11V6H10zM12,5H13V6H12zM13,5H14V6H13zM14,5H15V6H14zM15,5H16V6H15zM16,5H17V6H16zM18,5H19V6H18zM24,5H25V6H24zM4,6H5V7H4zM6,6H7V7H6zM7,6H8V7H7zM8,6H9V7H8zM10,6H11V7H10zM12,6H13V7H12zM13,6H14V7H13zM16,6H17V7H16zM18,6H19V7H18zM20,6H21V7H20zM21,6H22V7H21zM22,6H23V7H22zM24,6H25V7H24zM4,7H5V8H4zM6,7H7V8H6zM7,7H8V8H7zM8,7H9V8H8zM10,7H11V8H10zM12,7H13V8H12zM14,7H15V8H14zM18,7H19V8H18zM20,7H21V8H20zM21,7H22V8H21zM22,7H23V8H22zM24,7H25V8H24zM4,8H5V9H4zM6,8H7V9H6zM7,8H8V9H7zM8,8H9V9H8zM10,8H11V9H10zM13,8H14V9H13zM14,8H15V9H14zM15,8H16V9H15zM16,8H17V9H16zM18,8H19V9H18zM20,8H21V9H20zM21,8H22V9H21zM22,8H23V9H22zM24,8H25V9H24zM4,9H5V10H4zM10,9H11V10H10zM13,9H14V10H13zM16,9H17V10H16zM18,9H19V10H18zM24,9H25V10H24zM4,10H5V11H4zM5,10H6V11H5zM6,10H7V11H6zM7,10H8V11H7zM8,10H9V11H8zM9,10H10V11H9zM10,10H11V11H10zM12,10H13V11H12zM14,10H15V11H14zM16,10H17V11H16zM18,10H19V11H18zM19,10H20V11H19zM20,10H21V11H20zM21,10H22V11H21zM22,10H23V11H22zM23,10H24V11H23zM24,10H25V11H24zM12,11H13V12H12zM13,11H14V12H13zM14,11H15V12H14zM15,11H16V12H15zM16,11H17V12H16zM4,12H5V13H4zM10,12H11V13H10zM12,12H13V13H12zM13,12H14V13H13zM14,12H15V13H14zM16,12H17V13H16zM17,12H18V13H17zM18,12H19V13H18zM21,12H22V13H21zM22,12H23V13H22zM23,12H24V13H23zM4,13H5V14H4zM6,13H7V14H6zM7,13H8V14H7zM9,13H10V14H9zM13,13H14V14H13zM14,13H15V14H14zM16,13H17V14H16zM18,13H19V14H18zM20,13H21V14H20zM5,14H6V15H5zM6,14H7V15H6zM9,14H10V15H9zM10,14H11V15H10zM11,14H12V15H11zM14,14H15V15H14zM15,14H16V15H15zM17,14H18V15H17zM20,14H21V15H20zM21,14H22V15H21zM22,14H23V15H22zM23,14H24V15H23zM4,15H5V16H4zM5,15H6V16H5zM7,15H8V16H7zM12,15H13V16H12zM14,15H15V16H14zM20,15H21V16H20zM22,15H23V16H22zM4,16H5V17H4zM6,16H7V17H6zM9,16H10V17H9zM10,16H11V17H10zM11,16H12V17H11zM12,16H13V17H12zM18,16H19V17H18zM21,16H22V17H21zM22,16H23V17H22zM23,16H24V17H23zM12,17H13V18H12zM14,17H15V18H14zM15,17H16V18H15zM16,17H17V18H16zM17,17H18V18H17zM18,17H19V18H18zM19,17H20V18H19zM21,17H22V18H21zM4,18H5V19H4zM5,18H6V19H5zM6,18H7V19H6zM7,18H8V19H7zM8,18H9V19H8zM9,18H10V19H9zM10,18H11V19H10zM14,18H15V19H14zM16,18H17V19H16zM18,18H19V19H18zM19,18H20V19H19zM23,18H24V19H23zM4,19H5V20H4zM10,19H11V20H10zM15,19H16V20H15zM16,19H17V20H16zM17,19H18V20H17zM19,19H20V20H19zM20,19H21V20H20zM21,19H22V20H21zM4,20H5V21H4zM6,20H7V21H6zM7,20H8V21H7zM8,20H9V21H8zM10,20H11V21H10zM13,20H14V21H13zM16,20H17V21H16zM19,20H20V21H19zM22,20H23V21H22zM4,21H5V22H4zM6,21H7V22H6zM7,21H8V22H7zM8,21H9V22H8zM10,21H11V22H10zM14,21H15V22H14zM16,21H17V22H16zM22,21H23V22H22zM4,22H5V23H4zM6,22H7V23H6zM7,22H8V23H7zM8,22H9V23H8zM10,22H11V23H10zM13,22H14V23H13zM14,22H15V23H14zM18,22H19V23H18zM22,22H23V23H22zM23,22H24V23H23zM24,22H25V23H24zM4,23H5V24H4zM10,23H11V24H10zM14,23H15V24H14zM20,23H21V24H20zM22,23H23V24H22zM4,24H5V25H4zM5,24H6V25H5zM6,24H7V25H6zM7,24H8V25H7zM8,24H9V25H8zM9,24H10V25H9zM10,24H11V25H10zM12,24H13V25H12zM13,24H14V25H13zM14,24H15V25H14zM15,24H16V25H15zM17,24H18V25H17zM20,24H21V25H20zM21,24H22V25H21zM22,24H23V25H22zM23,24H24V25H23z" id="qr-path" fill="#000000" fill-opacity="1" fill-rule="nonzero" stroke="none" /></svg>

[paulo-raca]

The qrcode_modules attribute also cause crashes when using lxml.etree instead of xml.etree.ElementTree.

Fix PR also fixes this problem :)

>>> img = qrcode.make('Hi', image_factory=factory)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/media/Paulo/home/.local/lib/python3.10/site-packages/qrcode/main.py", line 29, in make
    return qr.make_image()
  File "/media/Paulo/home/.local/lib/python3.10/site-packages/qrcode/main.py", line 365, in make_image
    im = image_factory(
  File "/media/Paulo/home/.local/lib/python3.10/site-packages/qrcode/image/svg.py", line 145, in __init__
    super().__init__(*args, **kwargs)
  File "/media/Paulo/home/.local/lib/python3.10/site-packages/qrcode/image/svg.py", line 27, in __init__
    super().__init__(*args, **kwargs)
  File "/media/Paulo/home/.local/lib/python3.10/site-packages/qrcode/image/base.py", line 139, in __init__
    super().__init__(*args, **kwargs)
  File "/media/Paulo/home/.local/lib/python3.10/site-packages/qrcode/image/base.py", line 29, in __init__
    self._img = self.new_image(**kwargs)
  File "/media/Paulo/home/.local/lib/python3.10/site-packages/qrcode/image/svg.py", line 63, in new_image
    return self._svg(**kwargs)
  File "/media/Paulo/home/.local/lib/python3.10/site-packages/qrcode/image/svg.py", line 151, in _svg
    return super()._svg(viewBox=viewBox, **kwargs)
  File "/media/Paulo/home/.local/lib/python3.10/site-packages/qrcode/image/svg.py", line 96, in _svg
    svg = super()._svg(tag=tag, **kwargs)
  File "/media/Paulo/home/.local/lib/python3.10/site-packages/qrcode/image/svg.py", line 69, in _svg
    return ET.Element(
  File "src/lxml/etree.pyx", line 3037, in lxml.etree.Element
  File "src/lxml/apihelpers.pxi", line 131, in lxml.etree._makeElement
  File "src/lxml/apihelpers.pxi", line 119, in lxml.etree._makeElement
  File "src/lxml/apihelpers.pxi", line 317, in lxml.etree._initNodeAttributes
  File "src/lxml/apihelpers.pxi", line 334, in lxml.etree._addAttributeToNode
  File "src/lxml/apihelpers.pxi", line 1538, in lxml.etree._utf8
TypeError: Argument must be bytes or unicode, got 'list'