Account for deprecation of DiGraph._repr_svg_ in graphviz

Author: scarf005

.pre-commit-config.yaml

@@ -12,7 +12,7 @@ repos:
  - id: end-of-file-fixer
  - id: mixed-line-ending
  - repo: https://github.com/psf/black
- rev: 22.1.0
+ rev: 22.3.0
  hooks:
  - id: black
  - repo: https://github.com/timothycrosley/isort

binarytree/__init__.py

@@ -508,8 +508,12 @@ def _repr_svg_(self) -> str: # pragma: no cover
  .. _Jupyter notebooks: https://jupyter.org
  """
  try:
- # noinspection PyProtectedMember
- return str(self.graphviz()._repr_svg_())
+ try:
+ # noinspection PyProtectedMember
+ return str(self.graphviz()._repr_svg_())
+ except AttributeError:
+ # noinspection PyProtectedMember
+ return str(self.graphviz()._repr_image_svg_xml())
 
  except (SubprocessError, ExecutableNotFound, FileNotFoundError):
  return self.svg()