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d331936812
workaround ruamel.yaml issue 255,
where once an empty dict or list has been written,
'flow' style is used thereafter, using dense `{key: value}` form
instead of traditional yaml block style.
33 lines
788 B
Python
33 lines
788 B
Python
"""consolidated yaml API
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ensures the same yaml settings for reading/writing
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throughout tljh
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"""
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from ruamel.yaml.composer import Composer
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from ruamel.yaml import YAML
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class _NoEmptyFlowComposer(Composer):
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"""yaml composer that avoids setting flow_style on empty
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containers.
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workaround ruamel.yaml issue #255
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"""
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def compose_mapping_node(self, anchor):
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node = super().compose_mapping_node(anchor)
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if not node.value:
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node.flow_style = False
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return node
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def compose_sequence_node(self, anchor):
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node = super().compose_sequence_node(anchor)
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if not node.value:
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node.flow_style = False
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return node
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# create the global yaml object:
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yaml = YAML(typ="rt")
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yaml.Composer = _NoEmptyFlowComposer
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