PyYAML currently has 202 issues open and 87 PRs open. ruamel.yaml has 108 open issues and 0 open merge requests.
In the last 2 years, PyYAML had only one release (6.0.1), while ruamel.yaml has had 24 releases.
Using PyYAML to create OrderedDict objects from YAML dicts requires using an extra package "yamlloader", and it is not clear how that can be combined with the PyYAML safe_load() method. However, on Python >=3.6, dict is ordered, so yamlloader is no longer needed.
The PyYAML documentation is quite terse.
Due to various issues, some versions of PyYAML need to be excluded:
PyYAML>=5.3.1,!=5.4.0,!=5.4.1,!=6.0.0
Reasons for not making the transition (yet):
ruamel.yaml is still below 1.0 and states dev status "4 - Beta".
Transition from PyYAML to ruamel.yaml
Reasons in favor of making the transition:
OrderedDictobjects from YAML dicts requires using an extra package "yamlloader", and it is not clear how that can be combined with the PyYAMLsafe_load()method. However, on Python >=3.6, dict is ordered, so yamlloader is no longer needed.Reasons for not making the transition (yet):