AttributeError: 'DynamicStrictYAMLLoader' object has no attribute 'comment_handling'

I’m suddenly getting the following error on two different projects where I’m loading YAMLs using strictyaml. Using dependabot on both of them, so they have the latest version: strictyaml==1.4.0

Traceback (most recent call last):
  File "/opt/hostedtoolcache/Python/3.9.5/x64/bin/pelican", line 8, in <module>
    sys.exit(main())
  File "/opt/hostedtoolcache/Python/3.9.5/x64/lib/python3.9/site-packages/pelican/__init__.py", line 501, in main
    pelican, settings = get_instance(args)
  File "/opt/hostedtoolcache/Python/3.9.5/x64/lib/python3.9/site-packages/pelican/__init__.py", line 418, in get_instance
    return cls(settings), settings
  File "/opt/hostedtoolcache/Python/3.9.5/x64/lib/python3.9/site-packages/pelican/__init__.py", line 60, in __init__
    signals.initialized.send(self)
  File "/opt/hostedtoolcache/Python/3.9.5/x64/lib/python3.9/site-packages/blinker/base.py", line 266, in send
    return [(receiver, receiver(sender, **kwargs))
  File "/opt/hostedtoolcache/Python/3.9.5/x64/lib/python3.9/site-packages/blinker/base.py", line 266, in <listcomp>
    return [(receiver, receiver(sender, **kwargs))
  File "/home/runner/work/honzajavorek.cz/honzajavorek.cz/plugins/home_appearances.py", line 39, in load_appearances
    appearances = yaml.load(path.read_text(), SCHEMA).data
  File "/opt/hostedtoolcache/Python/3.9.5/x64/lib/python3.9/site-packages/strictyaml/parser.py", line 318, in load
    return generic_load(yaml_string, schema=schema, label=label)
  File "/opt/hostedtoolcache/Python/3.9.5/x64/lib/python3.9/site-packages/strictyaml/parser.py", line 280, in generic_load
    document = ruamelyaml.load(yaml_string, Loader=DynamicStrictYAMLLoader)
  File "/opt/hostedtoolcache/Python/3.9.5/x64/lib/python3.9/site-packages/ruamel/yaml/main.py", line 1067, in load
    return loader._constructor.get_single_data()
  File "/opt/hostedtoolcache/Python/3.9.5/x64/lib/python3.9/site-packages/ruamel/yaml/constructor.py", line 122, in get_single_data
    return self.construct_document(node)
  File "/opt/hostedtoolcache/Python/3.9.5/x64/lib/python3.9/site-packages/ruamel/yaml/constructor.py", line 132, in construct_document
    for _dummy in generator:
  File "/opt/hostedtoolcache/Python/3.9.5/x64/lib/python3.9/site-packages/ruamel/yaml/constructor.py", line 1611, in construct_yaml_seq
    data.extend(self.construct_rt_sequence(node, data))
  File "/opt/hostedtoolcache/Python/3.9.5/x64/lib/python3.9/site-packages/ruamel/yaml/constructor.py", line 1322, in construct_rt_sequence
    if self.loader and self.loader.comment_handling is None:
AttributeError: 'DynamicStrictYAMLLoader' object has no attribute 'comment_handling'

The specific code where this blew up is this:

https://github.com/honzajavorek/honzajavorek.cz/blob/4eccfcbb4620f9e30477e763cf8a6b7660e73a06/plugins/home_appearances.py#L39

path = Path('./content/data/appearances.yml')
appearances = yaml.load(path.read_text(), SCHEMA).data

But as I mentioned, this has happened on a different project I maintain, too. I tried to look up the error here or at the PyYAML repo, but no luck. Anyone knows what’s wrong? This code has worked previously and I made no changes to it, I suspect it exploded because of a version upgrade.

[crdoconnor]

There is a temporary fix which downgrades ruamel.yaml to version 0.17.4.

If you upgrade strictyaml to version 1.4.2 it should work.

On Mon, May 31, 2021 at 5:30 PM Colm O’Connor @.***> wrote:

I’m looking at it now.

On Mon, May 31, 2021 at 5:06 PM emagnantfkh @.***> wrote:

Many thanks for taking a look at this. My code broke this morning with the same error message. 😃

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[crdoconnor]

I’m looking at it now.

On Mon, May 31, 2021 at 5:06 PM emagnantfkh @.***> wrote:

Many thanks for taking a look at this. My code broke this morning with the same error message. 😃

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